v1.3.4

1. Bug fixes

Elixir

• [Kernel] Ensure the compiler does not generate unecessary variable bindings inside case statements. This improves the code emitted and make sure "unused variable warnings" are not mistakenly silenced
• [Kernel] Move raise checks to runtime to avoid crashing cover on Erlang 19.1
• [Protocol] Do not emit warnings when using protocols on opaque types

ExUnit

• [ExUnit.CaptureLog] Flush Erlang's :error_logger before capturing to avoid mixed messages