diff --git a/.appveyor.yml b/.appveyor.yml
index 488e400fd..4ec05f8c7 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -21,6 +21,10 @@ install:
   - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
   - rustc -vV
   - cargo -vV
+  # Install InnoSetup
+  - appveyor-retry appveyor DownloadFile https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2017-08-22-is.exe
+  - 2017-08-22-is.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
+  - set PATH="C:\Program Files (x86)\Inno Setup 5";%PATH%
 
 build_script:
   - cargo build --verbose
diff --git a/Cargo.lock b/Cargo.lock
index 0b062168f..b2222ed55 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -16,6 +16,11 @@ dependencies = [
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "arrayref"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "arrayvec"
 version = "0.4.10"
@@ -29,7 +34,7 @@ name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -47,7 +52,7 @@ dependencies = [
  "autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -58,7 +63,7 @@ version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -87,6 +92,17 @@ name = "bitflags"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "blake2b_simd"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.3.1"
@@ -136,7 +152,7 @@ version = "0.26.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -170,6 +186,11 @@ dependencies = [
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "constant_time_eq"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "cranelift-bforest"
 version = "0.26.0"
@@ -353,7 +374,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -363,7 +384,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -488,12 +509,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.48"
-source = "git+https://github.com/rust-lang/libc#42cd3ba27254c423e03f6f4324de57075047f6a0"
-
-[[package]]
-name = "libc"
-version = "0.2.48"
+version = "0.2.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -527,7 +543,7 @@ name = "memchr"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -535,7 +551,7 @@ name = "memmap"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -544,14 +560,6 @@ name = "memoffset"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "meowhash"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nix"
 version = "0.12.0"
@@ -560,7 +568,7 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -572,7 +580,7 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -600,7 +608,7 @@ name = "num_cpus"
 version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -617,7 +625,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -635,7 +643,7 @@ name = "parking_lot_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -690,7 +698,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -745,7 +753,7 @@ name = "rand_jitter"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -757,7 +765,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -816,7 +824,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1043,7 +1051,7 @@ version = "3.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1063,7 +1071,7 @@ name = "termion"
 version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1089,7 +1097,7 @@ name = "time"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1202,15 +1210,15 @@ dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-clif-backend 0.1.2",
- "wasmer-emscripten 0.1.0",
- "wasmer-runtime 0.1.4",
- "wasmer-runtime-core 0.1.2",
+ "wasmer-clif-backend 0.2.0",
+ "wasmer-emscripten 0.2.0",
+ "wasmer-runtime 0.2.0",
+ "wasmer-runtime-core 0.2.0",
 ]
 
 [[package]]
 name = "wasmer-clif-backend"
-version = "0.1.2"
+version = "0.2.0"
 dependencies = [
  "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-codegen 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1218,60 +1226,62 @@ dependencies = [
  "cranelift-native 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-wasm 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hashbrown 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde-bench 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_bytes 0.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "target-lexicon 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-runtime-core 0.1.2",
- "wasmer-win-exception-handler 0.0.1",
+ "wasmer-runtime-core 0.2.0",
+ "wasmer-win-exception-handler 0.2.0",
  "wasmparser 0.23.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasmer-emscripten"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (git+https://github.com/rust-lang/libc)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-clif-backend 0.1.2",
- "wasmer-runtime-core 0.1.2",
+ "wasmer-clif-backend 0.2.0",
+ "wasmer-runtime-core 0.2.0",
 ]
 
 [[package]]
 name = "wasmer-runtime"
-version = "0.1.4"
+version = "0.2.0"
 dependencies = [
  "criterion 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-clif-backend 0.1.2",
- "wasmer-runtime-core 0.1.2",
+ "wasmer-clif-backend 0.2.0",
+ "wasmer-runtime-core 0.2.0",
 ]
 
 [[package]]
 name = "wasmer-runtime-c-api"
-version = "0.1.4"
+version = "0.2.0"
 dependencies = [
  "cbindgen 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-runtime 0.1.4",
- "wasmer-runtime-core 0.1.2",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasmer-runtime 0.2.0",
+ "wasmer-runtime-core 0.2.0",
 ]
 
 [[package]]
 name = "wasmer-runtime-core"
-version = "0.1.2"
+version = "0.2.0"
 dependencies = [
+ "blake2b_simd 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "errno 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "field-offset 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1279,8 +1289,7 @@ dependencies = [
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
- "meowhash 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "page_size 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1288,29 +1297,28 @@ dependencies = [
  "serde-bench 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_bytes 0.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-clif-backend 0.1.2",
  "wasmparser 0.23.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "wasmer-spectests"
-version = "0.1.2"
+version = "0.2.0"
 dependencies = [
  "wabt 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-clif-backend 0.1.2",
- "wasmer-runtime-core 0.1.2",
+ "wasmer-clif-backend 0.2.0",
+ "wasmer-runtime-core 0.2.0",
 ]
 
 [[package]]
 name = "wasmer-win-exception-handler"
-version = "0.0.1"
+version = "0.2.0"
 dependencies = [
  "bindgen 0.46.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cmake 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasmer-runtime-core 0.1.2",
+ "wasmer-runtime-core 0.2.0",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1330,7 +1338,7 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1382,6 +1390,7 @@ dependencies = [
 [metadata]
 "checksum aho-corasick 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1e9a933f4e58658d7b12defcf96dc5c720f20832deebe3e0a19efd3b6aaeeb9e"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+"checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799"
@@ -1389,6 +1398,7 @@ dependencies = [
 "checksum backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)" = "797c830ac25ccc92a7f8a7b9862bde440715531514594a6154e3d4a54dd769b6"
 "checksum bindgen 0.46.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8f7f7f0701772b17de73e4f5cbcb1dd6926f4706cba4c1ab62c5367f8bdc94e1"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
+"checksum blake2b_simd 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ce2571a6cd634670daa2977cc894c1cc2ba57c563c498e5a82c35446f34d056e"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
 "checksum cbindgen 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "32e01024aaf5390d6a8145047371a4f5b0063a14c1e411bc731353bd2278ca44"
@@ -1399,6 +1409,7 @@ dependencies = [
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum cmake 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)" = "6ec65ee4f9c9d16f335091d23693457ed4928657ba4982289d7fafee03bc614a"
+"checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
 "checksum cranelift-bforest 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)" = "40f8ff24e9a6c89b8a846b14df9a34d2cac17cea7bdb5c81ed6b4744ee0e38bf"
 "checksum cranelift-codegen 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)" = "42f5b809bd885c368e01aeec8fe04f21dcb07569834b907d75b4a7bed8d067eb"
 "checksum cranelift-codegen-meta 0.26.0 (registry+https://github.com/rust-lang/crates.io-index)" = "014c23ed3ebdc8377d41540af638245207dd169f421df042dfccc867465734ed"
@@ -1435,15 +1446,13 @@ dependencies = [
 "checksum itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1306f3464951f30e30d12373d31c79fbd52d236e5e896fd92f96ec7babbbe60b"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
-"checksum libc 0.2.48 (git+https://github.com/rust-lang/libc)" = "<none>"
-"checksum libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)" = "e962c7641008ac010fa60a7dfdc1712449f29c44ef2d4702394aea943ee75047"
+"checksum libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)" = "413f3dfc802c5dc91dc570b05125b6cda9855edfaa9825c9849807876376e70e"
 "checksum libloading 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9c3ad660d7cb8c5822cd83d10897b0f1f1526792737a179e73896152f85b88c2"
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2efc7bc57c883d4a4d6e3246905283d8dae951bb3bd32f49d6ef297f546e1c39"
 "checksum memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6585fd95e7bb50d6cc31e20d4cf9afb4e2ba16c5846fc76793f11218da9c475b"
 "checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
-"checksum meowhash 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b00a85ae2fa3525c3f0e6e7b87bec96ab5587100d7ba7b3e30e1885960a8230b"
 "checksum nix 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "921f61dc817b379d0834e45d5ec45beaacfae97082090a49c2cf30dcbc30206f"
 "checksum nix 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "46f0f3210768d796e8fa79ec70ee6af172dacbe7147f5e69be5240a47778302b"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
diff --git a/Cargo.toml b/Cargo.toml
index 15b09e542..21bbfa60c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,6 +36,6 @@ glob = "0.2.11"
 [features]
 default = ["fast-tests"]
 
-debug = []
+debug = ["wasmer-clif-backend/debug", "wasmer-runtime-core/debug"]
 # This feature will allow cargo test to run much faster
 fast-tests = []
diff --git a/Makefile b/Makefile
index 2506f196c..74e3428fc 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ capi:
 #     rm -rf artifacts
 
 build:
-	cargo build
+	cargo build --features debug
 
 install:
 	cargo install --path .
@@ -47,6 +47,9 @@ release:
 	# brew install mingw-w64
 	cargo build --release
 
+debug-release:
+	cargo build --release --features debug
+
 debug-release:
 	cargo build --release --features "debug"
 
diff --git a/examples/nginx/LICENSE b/examples/nginx/LICENSE
new file mode 100644
index 000000000..c63e0ba4e
--- /dev/null
+++ b/examples/nginx/LICENSE
@@ -0,0 +1,26 @@
+/* 
+ * Copyright (C) 2002-2019 Igor Sysoev
+ * Copyright (C) 2011-2019 Nginx, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
diff --git a/lib/clif-backend/Cargo.toml b/lib/clif-backend/Cargo.toml
index 701f821fc..3ac5105cf 100644
--- a/lib/clif-backend/Cargo.toml
+++ b/lib/clif-backend/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-clif-backend"
-version = "0.1.2"
+version = "0.2.0"
 description = "Wasmer runtime Cranelift compiler backend"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -8,7 +8,7 @@ repository = "https://github.com/wasmerio/wasmer"
 edition = "2018"
 
 [dependencies]
-wasmer-runtime-core = { path = "../runtime-core", version = "0.1.2" }
+wasmer-runtime-core = { path = "../runtime-core", version = "0.2.0" }
 cranelift-native = "0.26.0"
 cranelift-codegen = "0.26.0"
 cranelift-entity = "0.26.0"
@@ -18,7 +18,8 @@ target-lexicon = "0.2.0"
 wasmparser = "0.23.0"
 byteorder = "1"
 nix = "0.13.0"
-libc = "0.2.48"
+libc = "0.2.49"
+rayon = "1.0"
 
 # Dependencies for caching.
 [dependencies.serde]
@@ -32,7 +33,7 @@ version = "0.0.7"
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["errhandlingapi", "minwindef", "minwinbase", "winnt"] }
-wasmer-win-exception-handler = { path = "../win-exception-handler", version = "0.0.1" }
+wasmer-win-exception-handler = { path = "../win-exception-handler", version = "0.2.0" }
 
 [features]
 debug = ["wasmer-runtime-core/debug"]
diff --git a/lib/clif-backend/src/lib.rs b/lib/clif-backend/src/lib.rs
index df2e4e208..c4abf644f 100644
--- a/lib/clif-backend/src/lib.rs
+++ b/lib/clif-backend/src/lib.rs
@@ -24,6 +24,7 @@ use wasmer_runtime_core::{
 #[macro_use]
 extern crate serde_derive;
 
+extern crate rayon;
 extern crate serde;
 
 use wasmparser::{self, WasmDecoder};
diff --git a/lib/clif-backend/src/resolver.rs b/lib/clif-backend/src/resolver.rs
index 604778f01..53b3a789a 100644
--- a/lib/clif-backend/src/resolver.rs
+++ b/lib/clif-backend/src/resolver.rs
@@ -7,6 +7,7 @@ use crate::{
     },
     signal::HandlerData,
 };
+use rayon::prelude::*;
 
 use byteorder::{ByteOrder, LittleEndian};
 use cranelift_codegen::{ir, isa, Context};
@@ -92,25 +93,45 @@ impl FuncResolverBuilder {
         function_bodies: Map<LocalFuncIndex, ir::Function>,
         info: &ModuleInfo,
     ) -> CompileResult<(Self, HandlerData)> {
-        let mut compiled_functions: Vec<Vec<u8>> = Vec::with_capacity(function_bodies.len());
-        let mut local_relocs = Map::with_capacity(function_bodies.len());
-        let mut external_relocs = Map::new();
+        let num_func_bodies = function_bodies.len();
+        let mut compiled_functions: Vec<(Vec<u8>, RelocSink)> = Vec::with_capacity(num_func_bodies);
+        let mut local_relocs = Map::with_capacity(num_func_bodies);
+        let mut external_relocs = Map::with_capacity(num_func_bodies);
 
         let mut trap_sink = TrapSink::new();
-        let mut local_trap_sink = LocalTrapSink::new();
 
-        let mut ctx = Context::new();
+        let compiled_functions: Result<Vec<(Vec<u8>, (RelocSink, LocalTrapSink))>, CompileError> =
+            function_bodies
+                .into_vec()
+                .par_iter()
+                .map_init(
+                    || Context::new(),
+                    |ctx, func| {
+                        let mut code_buf = Vec::new();
+                        ctx.func = func.to_owned();
+                        let mut reloc_sink = RelocSink::new();
+                        let mut local_trap_sink = LocalTrapSink::new();
+
+                        ctx.compile_and_emit(
+                            isa,
+                            &mut code_buf,
+                            &mut reloc_sink,
+                            &mut local_trap_sink,
+                        )
+                        .map_err(|e| CompileError::InternalError { msg: e.to_string() })?;
+                        ctx.clear();
+                        Ok((code_buf, (reloc_sink, local_trap_sink)))
+                    },
+                )
+                .collect();
+
+        let compiled_functions = compiled_functions?;
         let mut total_size = 0;
-
-        for (_, func) in function_bodies {
-            ctx.func = func;
-            let mut code_buf = Vec::new();
-            let mut reloc_sink = RelocSink::new();
-
-            ctx.compile_and_emit(isa, &mut code_buf, &mut reloc_sink, &mut local_trap_sink)
-                .map_err(|e| CompileError::InternalError { msg: e.to_string() })?;
-            ctx.clear();
-
+        // We separate into two iterators, one iterable and one into iterable
+        let (code_bufs, sinks): (Vec<Vec<u8>>, Vec<(RelocSink, LocalTrapSink)>) =
+            compiled_functions.into_iter().unzip();
+        for (code_buf, (reloc_sink, mut local_trap_sink)) in code_bufs.iter().zip(sinks.into_iter())
+        {
             // Clear the local trap sink and consolidate all trap info
             // into a single location.
             trap_sink.drain_local(total_size, &mut local_trap_sink);
@@ -118,7 +139,6 @@ impl FuncResolverBuilder {
             // Round up each function's size to pointer alignment.
             total_size += round_up(code_buf.len(), mem::size_of::<usize>());
 
-            compiled_functions.push(code_buf);
             local_relocs.push(reloc_sink.local_relocs.into_boxed_slice());
             external_relocs.push(reloc_sink.external_relocs.into_boxed_slice());
         }
@@ -145,10 +165,10 @@ impl FuncResolverBuilder {
             *i = 0xCC;
         }
 
-        let mut map = Map::with_capacity(compiled_functions.len());
+        let mut map = Map::with_capacity(num_func_bodies);
 
         let mut previous_end = 0;
-        for compiled in compiled_functions.iter() {
+        for compiled in code_bufs.iter() {
             let new_end = previous_end + round_up(compiled.len(), mem::size_of::<usize>());
             unsafe {
                 memory.as_slice_mut()[previous_end..previous_end + compiled.len()]
diff --git a/lib/emscripten/Cargo.toml b/lib/emscripten/Cargo.toml
index ec5e035d6..1300eb124 100644
--- a/lib/emscripten/Cargo.toml
+++ b/lib/emscripten/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-emscripten"
-version = "0.1.0"
+version = "0.2.0"
 description = "Wasmer runtime emscripten implementation library"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -9,9 +9,9 @@ edition = "2018"
 build = "build/mod.rs"
 
 [dependencies]
-wasmer-runtime-core = { path = "../runtime-core", version = "0.1.0" }
+wasmer-runtime-core = { path = "../runtime-core", version = "0.2.0" }
 lazy_static = "1.2.0"
-libc = { git = "https://github.com/rust-lang/libc" }
+libc = "0.2.49"
 byteorder = "1"
 time = "0.1.41"
 
@@ -19,7 +19,7 @@ time = "0.1.41"
 rand = "0.6"
 
 [dev-dependencies]
-wasmer-clif-backend = { path = "../clif-backend", version = "0.1.0" }
+wasmer-clif-backend = { path = "../clif-backend", version = "0.2.0" }
 wabt = "0.7.2"
 
 [build-dependencies]
diff --git a/lib/emscripten/emtests/test_getcwd.c b/lib/emscripten/emtests/test_getcwd.c
new file mode 100644
index 000000000..a3955d470
--- /dev/null
+++ b/lib/emscripten/emtests/test_getcwd.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    const unsigned int size = 256;
+    char cwd[size] = {};
+    char* buf = getcwd(cwd, size);
+    printf("getcwd\n");
+    return 0;
+}
diff --git a/lib/emscripten/emtests/test_getcwd.out b/lib/emscripten/emtests/test_getcwd.out
new file mode 100644
index 000000000..263db4c74
--- /dev/null
+++ b/lib/emscripten/emtests/test_getcwd.out
@@ -0,0 +1 @@
+getcwd
diff --git a/lib/emscripten/emtests/test_getcwd.wasm b/lib/emscripten/emtests/test_getcwd.wasm
new file mode 100644
index 000000000..0cf6f73a2
Binary files /dev/null and b/lib/emscripten/emtests/test_getcwd.wasm differ
diff --git a/lib/emscripten/src/lib.rs b/lib/emscripten/src/lib.rs
index 5a7f008f1..5a2f24211 100644
--- a/lib/emscripten/src/lib.rs
+++ b/lib/emscripten/src/lib.rs
@@ -502,6 +502,7 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
             "___syscall168" => func!(crate::syscalls::___syscall168),
             "___syscall180" => func!(crate::syscalls::___syscall180),
             "___syscall181" => func!(crate::syscalls::___syscall181),
+            "___syscall183" => func!(crate::syscalls::___syscall183),
             "___syscall191" => func!(crate::syscalls::___syscall191),
             "___syscall192" => func!(crate::syscalls::___syscall192),
             "___syscall194" => func!(crate::syscalls::___syscall194),
diff --git a/lib/emscripten/src/syscalls/mod.rs b/lib/emscripten/src/syscalls/mod.rs
index ef9ef40ee..2143599f7 100644
--- a/lib/emscripten/src/syscalls/mod.rs
+++ b/lib/emscripten/src/syscalls/mod.rs
@@ -46,8 +46,13 @@ use std::slice;
 // Another conditional constant for name resolution: Macos et iOS use
 // SO_NOSIGPIPE as a setsockopt flag to disable SIGPIPE emission on socket.
 // Other platforms do otherwise.
+use crate::env::get_emscripten_data;
+use crate::utils::copy_cstr_into_wasm;
+use crate::utils::read_string_from_wasm;
 #[cfg(target_os = "darwin")]
 use libc::SO_NOSIGPIPE;
+use std::ffi::CString;
+
 #[cfg(not(target_os = "darwin"))]
 const SO_NOSIGPIPE: c_int = 0;
 
@@ -186,6 +191,25 @@ pub fn ___syscall110(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     -1
 }
 
+// getcwd
+pub fn ___syscall183(ctx: &mut Ctx, buf_offset: u32, _size: u32) -> u32 {
+    debug!("emscripten::___syscall183");
+    use std::env;
+    let path = env::current_dir();
+    let path_string = path.unwrap().display().to_string();
+    let len = path_string.len();
+    unsafe {
+        let pointer_to_buffer =
+            emscripten_memory_pointer!(ctx.memory(0), buf_offset) as *mut libc::c_char;
+        let slice = slice::from_raw_parts_mut(pointer_to_buffer, len.clone());
+        for (byte, loc) in path_string.bytes().zip(slice.iter_mut()) {
+            *loc = byte as _;
+        }
+        *pointer_to_buffer.add(len.clone()) = 0;
+    }
+    buf_offset
+}
+
 // mmap2
 pub fn ___syscall192(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall192 (mmap2) {}", which);
diff --git a/lib/emscripten/tests/emtests/mod.rs b/lib/emscripten/tests/emtests/mod.rs
index 37c88a041..a280fc48a 100644
--- a/lib/emscripten/tests/emtests/mod.rs
+++ b/lib/emscripten/tests/emtests/mod.rs
@@ -54,6 +54,7 @@ mod test_funcptrfunc;
 mod test_funcs;
 mod test_functionpointer_libfunc_varargs;
 mod test_fwrite_0;
+mod test_getcwd;
 mod test_getgep;
 mod test_getloadavg;
 mod test_getopt;
diff --git a/lib/emscripten/tests/emtests/test_getcwd.rs b/lib/emscripten/tests/emtests/test_getcwd.rs
new file mode 100644
index 000000000..ec770b505
--- /dev/null
+++ b/lib/emscripten/tests/emtests/test_getcwd.rs
@@ -0,0 +1,9 @@
+#[test]
+fn test_getcwd() {
+    assert_emscripten_output!(
+        "../../emtests/test_getcwd.wasm",
+        "getcwd",
+        vec![],
+        "../../emtests/test_getcwd.out"
+    );
+}
diff --git a/lib/runtime-c-api/Cargo.toml b/lib/runtime-c-api/Cargo.toml
index 692c03cd7..d2b327c22 100644
--- a/lib/runtime-c-api/Cargo.toml
+++ b/lib/runtime-c-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-runtime-c-api"
-version = "0.1.4"
+version = "0.2.0"
 description = "Wasmer c-api library"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -9,8 +9,8 @@ edition = "2018"
 readme = "README.md"
 
 [dependencies]
-wasmer-runtime = { path = "../runtime", version = "0.1.2" }
-wasmer-runtime-core = { path = "../runtime-core", version = "0.1.2" }
+wasmer-runtime = { path = "../runtime", version = "0.2.0" }
+wasmer-runtime-core = { path = "../runtime-core", version = "0.2.0" }
 libc = "0.2"
 
 [lib]
diff --git a/lib/runtime-core/Cargo.toml b/lib/runtime-core/Cargo.toml
index cd0648613..00ac57189 100644
--- a/lib/runtime-core/Cargo.toml
+++ b/lib/runtime-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-runtime-core"
-version = "0.1.2"
+version = "0.2.0"
 description = "Wasmer runtime core library"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -15,7 +15,7 @@ parking_lot = "0.7.1"
 lazy_static = "1.2.0"
 indexmap = "1.0.2"
 errno = "0.2.4"
-libc = "0.2.48"
+libc = "0.2.49"
 hex = "0.3.2"
 
 # Dependencies for caching.
@@ -29,8 +29,8 @@ version = "1.0"
 version = "0.10"
 [dependencies.serde-bench]
 version = "0.0.7"
-[dependencies.meowhash]
-version = "0.1.2"
+[dependencies.blake2b_simd]
+version = "0.4.1"
 [dependencies.digest]
 version = "0.8.0"
 [dependencies.hashbrown]
@@ -41,7 +41,6 @@ features = ["serde"]
 winapi = { version = "0.3", features = ["memoryapi"] }
 
 [dev-dependencies]
-wasmer-clif-backend = { path = "../clif-backend", version = "0.1.2" }
 field-offset = "0.1.1"
 
 [features]
diff --git a/lib/runtime-core/src/cache.rs b/lib/runtime-core/src/cache.rs
index 4859bd390..339b78fcc 100644
--- a/lib/runtime-core/src/cache.rs
+++ b/lib/runtime-core/src/cache.rs
@@ -2,8 +2,7 @@ use crate::{
     module::{Module, ModuleInfo},
     sys::Memory,
 };
-use digest::Digest;
-use meowhash::MeowHasher;
+use blake2b_simd::blake2bp;
 use std::{fmt, io, mem, slice};
 
 #[derive(Debug)]
@@ -45,7 +44,12 @@ impl WasmHash {
     pub fn generate(wasm: &[u8]) -> Self {
         let mut first_part = [0u8; 32];
         let mut second_part = [0u8; 32];
-        let generic_array = MeowHasher::digest(wasm);
+
+        let mut state = blake2bp::State::new();
+        state.update(wasm);
+
+        let mut hasher = state.finalize();
+        let generic_array = hasher.as_bytes();
 
         first_part.copy_from_slice(&generic_array[0..32]);
         second_part.copy_from_slice(&generic_array[32..64]);
diff --git a/lib/runtime-core/src/error.rs b/lib/runtime-core/src/error.rs
index 1f9f60c61..abc69cc5e 100644
--- a/lib/runtime-core/src/error.rs
+++ b/lib/runtime-core/src/error.rs
@@ -365,7 +365,24 @@ impl From<ResolveError> for CallError {
 
 impl std::fmt::Display for Error {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        write!(f, "{}", self)
+        match self {
+            Error::CompileError(err) => write!(f, "compile error: {}", err),
+            Error::LinkError(errs) => {
+                if errs.len() == 1 {
+                    write!(f, "link error: {}", errs[0])
+                } else {
+                    write!(f, "{} link errors:", errs.len())?;
+                    for (i, err) in errs.iter().enumerate() {
+                        write!(f, " ({} of {}) {}", i + 1, errs.len(), err)?;
+                    }
+                    Ok(())
+                }
+            }
+            Error::RuntimeError(err) => write!(f, "runtime error: {}", err),
+            Error::ResolveError(err) => write!(f, "resolve error: {}", err),
+            Error::CallError(err) => write!(f, "call error: {}", err),
+            Error::CreationError(err) => write!(f, "creation error: {}", err),
+        }
     }
 }
 
diff --git a/lib/runtime-core/src/structures/map.rs b/lib/runtime-core/src/structures/map.rs
index d7177c427..add5b0257 100644
--- a/lib/runtime-core/src/structures/map.rs
+++ b/lib/runtime-core/src/structures/map.rs
@@ -56,6 +56,10 @@ where
     pub fn into_boxed_map(self) -> BoxedMap<K, V> {
         BoxedMap::new(self.elems.into_boxed_slice())
     }
+
+    pub fn into_vec(self) -> Vec<V> {
+        self.elems
+    }
 }
 
 impl<K, V> Map<K, V>
diff --git a/lib/runtime/Cargo.toml b/lib/runtime/Cargo.toml
index 979fae140..f7aa32cb5 100644
--- a/lib/runtime/Cargo.toml
+++ b/lib/runtime/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-runtime"
-version = "0.1.4"
+version = "0.2.0"
 description = "Wasmer runtime library"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -14,11 +14,11 @@ memmap = "0.7.0"
 
 [dependencies.wasmer-runtime-core]
 path = "../runtime-core"
-version = "0.1.2"
+version = "0.2.0"
 
 [dependencies.wasmer-clif-backend]
 path = "../clif-backend"
-version = "0.1.2"
+version = "0.2.0"
 
 [dev-dependencies]
 tempfile = "3.0.7"
diff --git a/lib/runtime/README.md b/lib/runtime/README.md
index bd9bb0f0c..5e5542c8d 100644
--- a/lib/runtime/README.md
+++ b/lib/runtime/README.md
@@ -51,7 +51,7 @@ fn main() -> error::Result<()> {
     // We're not importing anything, so make an empty import object.
     let import_object = imports! {};
 
-    let mut instance = instantiate(WASM, import_object)?;
+    let mut instance = instantiate(WASM, &import_object)?;
 
     let values = instance
         .func("add_one")?
diff --git a/lib/spectests/Cargo.toml b/lib/spectests/Cargo.toml
index f69782b40..672013dd9 100644
--- a/lib/spectests/Cargo.toml
+++ b/lib/spectests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-spectests"
-version = "0.1.2"
+version = "0.2.0"
 description = "Wasmer spectests library"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -9,13 +9,13 @@ edition = "2018"
 build = "build/mod.rs"
 
 [dependencies]
-wasmer-runtime-core = { path = "../runtime-core" }
+wasmer-runtime-core = { path = "../runtime-core", version = "0.2.0" }
 
 [build-dependencies]
 wabt = "0.7.2"
 
 [dev-dependencies]
-wasmer-clif-backend = { path = "../clif-backend", version = "0.1.2" }
+wasmer-clif-backend = { path = "../clif-backend", version = "0.2.0" }
 wabt = "0.7.2"
 
 [features]
diff --git a/lib/win-exception-handler/Cargo.toml b/lib/win-exception-handler/Cargo.toml
index 043dc3c59..18855212b 100644
--- a/lib/win-exception-handler/Cargo.toml
+++ b/lib/win-exception-handler/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-win-exception-handler"
-version = "0.0.1"
+version = "0.2.0"
 description = "Wasmer runtime exception handling for Windows"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
@@ -8,9 +8,9 @@ repository = "https://github.com/wasmerio/wasmer"
 edition = "2018"
 
 [target.'cfg(windows)'.dependencies]
-wasmer-runtime-core = { path = "../runtime-core", version = "0.1.2" }
+wasmer-runtime-core = { path = "../runtime-core", version = "0.2.0" }
 winapi = { version = "0.3", features = ["winbase", "errhandlingapi", "minwindef", "minwinbase", "winnt"] }
-libc = "0.2.48"
+libc = "0.2.49"
 
 [build-dependencies]
 cmake = "0.1.35"
diff --git a/src/bin/wasmer.rs b/src/bin/wasmer.rs
index 6b8c9b54b..d5364504b 100644
--- a/src/bin/wasmer.rs
+++ b/src/bin/wasmer.rs
@@ -1,7 +1,6 @@
 extern crate structopt;
 
 use std::env;
-use std::fs;
 use std::fs::File;
 use std::io;
 use std::io::Read;
@@ -14,7 +13,6 @@ use wasmer::webassembly::InstanceABI;
 use wasmer::*;
 use wasmer_emscripten;
 use wasmer_runtime::cache::{Cache as BaseCache, FileSystemCache, WasmHash};
-use wasmer_runtime::error::CacheError;
 
 #[derive(Debug, StructOpt)]
 #[structopt(name = "wasmer", about = "Wasm execution runtime.")]
@@ -84,6 +82,12 @@ fn get_cache_dir() -> PathBuf {
 
 /// Execute a wasm/wat file
 fn execute_wasm(options: &Run) -> Result<(), String> {
+    // force disable caching on windows
+    #[cfg(target_os = "windows")]
+    let disable_cache = true;
+    #[cfg(not(target_os = "windows"))]
+    let disable_cache = options.disable_cache;
+
     let wasm_path = &options.path;
 
     let mut wasm_binary: Vec<u8> = read_file_contents(wasm_path).map_err(|err| {
@@ -99,7 +103,7 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
             .map_err(|e| format!("Can't convert from wast to wasm: {:?}", e))?;
     }
 
-    let module = if !options.disable_cache {
+    let module = if !disable_cache {
         // If we have cache enabled
 
         // We generate a hash for the given binary, so we can use it as key
@@ -188,8 +192,10 @@ fn main() {
         CLIOptions::SelfUpdate => {
             println!("Self update is not supported on Windows. Use install instructions on the Wasmer homepage: https://wasmer.io");
         }
+        #[cfg(not(target_os = "windows"))]
         CLIOptions::Cache(cache) => match cache {
             Cache::Clean => {
+                use std::fs;
                 let cache_dir = get_cache_dir();
                 fs::remove_dir_all(cache_dir.clone()).expect("Can't remove cache dir");
                 fs::create_dir(cache_dir.clone()).expect("Can't create cache dir");
@@ -198,5 +204,9 @@ fn main() {
                 println!("{}", get_cache_dir().to_string_lossy());
             }
         },
+        #[cfg(target_os = "windows")]
+        CLIOptions::Cache(_) => {
+            println!("Caching is disabled for Windows.");
+        }
     }
 }
diff --git a/src/installer/wasmer.iss b/src/installer/wasmer.iss
index 04850eb7a..f844eb4da 100644
--- a/src/installer/wasmer.iss
+++ b/src/installer/wasmer.iss
@@ -11,7 +11,7 @@ ChangesEnvironment=yes
 OutputBaseFilename=WasmerInstaller
 
 [Files]
-Source: "..\target\release\wasmer.exe"; DestDir: "{app}\bin"
+Source: "..\..\target\release\wasmer.exe"; DestDir: "{app}\bin"
 
 [Code]
 const EnvironmentKey = 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment';