message: Improved CHANGELOG
  Added dates to different versions and updated missing PRs
diff: @@ -5,9 +5,12 @@ All PRs to the Wasmer repository must add to this file.
  Blocks of changes will separated by version increments.
  ## **[Unreleased]**
  -- [#542](https://github.com/wasmerio/wasmer/pull/542) Add SIMD support to wasmer and implement it in the LLVM backend only.
  +- [#561](https://github.com/wasmerio/wasmer/pull/561) Call the `data_finalizer` field on the `Ctx`
  +- [#576](https://github.com/wasmerio/wasmer/pull/576) fix `Drop` of uninit `Ctx`
  +- [#542](https://github.com/wasmerio/wasmer/pull/542) Add SIMD support to Wasmer (LLVM backend only)
  + - Updates LLVM to version 8.0
  -## 0.5.7
  +## 0.5.7 - 2019-07-23
  - [#575](https://github.com/wasmerio/wasmer/pull/575) Prepare for release; update wapm to 0.3.6
  - [#555](https://github.com/wasmerio/wasmer/pull/555) WASI filesystem rewrite. Major improvements
  - adds virtual root showing all preopened directories
  @@ -15,7 +18,7 @@ Blocks of changes will separated by version increments.
  - symlinks work in a lot more situations
  - many misc. improvements to most syscalls touching the filesystem
  -## 0.5.6
  +## 0.5.6 - 2019-07-16
  - [#565](https://github.com/wasmerio/wasmer/pull/565) Update wapm and bump version to 0.5.6
  - [#563](https://github.com/wasmerio/wasmer/pull/563) Improve wasi testing infrastructure
  - fixes arg parsing from comments & fixes the mapdir test to have the native code doing the same thing as the WASI code
  @@ -23,15 +26,15 @@ Blocks of changes will separated by version increments.
  - compiles wasm with size optimizations & strips generated wasm with wasm-strip
  - [#554](https://github.com/wasmerio/wasmer/pull/554) Finish implementation of `wasi::fd_seek`, fix bug in filestat
  -## 0.5.5
  +## 0.5.5 - 2019-07-10
  - [#541](https://github.com/wasmerio/wasmer/pull/541) Fix dependency graph by making separate test crates; ABI implementations should not depend on compilers. Add Cranelift fork as git submodule of clif-backend
  - [#537](https://github.com/wasmerio/wasmer/pull/537) Add hidden flag (`--cache-key`) to use prehashed key into the compiled wasm cache and change compiler backend-specific caching to use directories
  - [#536](https://github.com/wasmerio/wasmer/pull/536) ~Update cache to use compiler backend name in cache key~
  -## 0.5.4
  +## 0.5.4 - 2019-07-06
  - [#529](https://github.com/wasmerio/wasmer/pull/529) Updates the Wasm Interface library, which is used by wapm, with bug fixes and error message improvements
  -## 0.5.3
  +## 0.5.3 - 2019-07-03
  - [#523](https://github.com/wasmerio/wasmer/pull/523) Update wapm version to fix bug related to signed packages in the global namespace and locally-stored public keys
  ## 0.5.2 - 2019-07-02
  