v1.5.2

1. Enhancements

Elixir

• [Kernel] Optimize function definition with multiple clauses by not traversing the internal clauses table
• [Kernel] Warn if unary operators are followed by new lines
• [Registry] Use the name of the Registry as its :id in the child_spec/1 function

2. Bug fixes

Elixir

• [DateTime] Fix negative microsecond result when passing negative Unix epochs to from_unix/2
• [Kernel] Improve error message for oversized atoms
• [Kernel] Ensure @impl attribute also propagates to clauses from default arguments
• [Kernel] Emit proper error for unknown vars inside binary pattern in match

IEx

• [IEx] Do not crash IEx unexpectedly on System.stop/0
• [IEx.Helpers] Ensure exiting a breakpoint set inside a breakpoint does not terminate the shell unexpectedly

Mix

• [mix local.hex] Ensure --if-missing flag works as advertised
• [mix test] Do not trigger additional error reports when there is a failure when loading test files
• [Mix.SCM.Git] Ensure errors when invoking git propagate correctly