Add changelog entry.

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## **[Unreleased]**
 
 - [#968](https://github.com/wasmerio/wasmer/pull/968) Added `--invoke` option to the command
+- [#971](https://github.com/wasmerio/wasmer/pull/971) In LLVM backend, use unaligned loads and stores for non-atomic accesses to wasmer memory.
 - [#960](https://github.com/wasmerio/wasmer/pull/960) Fix `runtime-c-api` header files when compiled by clang.
 - [#925](https://github.com/wasmerio/wasmer/pull/925) Host functions can be closures with a captured environment.
 - [#917](https://github.com/wasmerio/wasmer/pull/917) Host functions (aka imported functions) may not have `&mut vm::Ctx` as first argument, i.e. the presence of the `&mut vm::Ctx` argument is optional.