v1.18.3

1. Enhancements

Elixir

• [JSON] Encode any JSON key to string
• [Kernel] Allow <<_::3*8>> in typespecs

Mix

• [mix loadpaths] Support --no-listeners option

2. Bug fixes

Elixir

• [CLI] Fix --no-color not setting :ansi_enabled to false
• [Protocol] Return correct implementation for an invalid struct pointing to nil
• [Stream] Do not raise when Stream.cycle/1 is explicitly halted

ExUnit

• [ExUnit.Diff] Fix regression when diffing nested improper lists

IEx

• [IEx.Autocomplete] Fix autocomplete crash when expanding struct with __MODULE__
• [IEx.Helpers] Do not purge on recompile if IEx is not running