v0.3.0

Enhancements

• Support use AsyncWith outside of a module. This allows interactive IEx sessions.
• Raise CompilerError instead of ArgumentError when the async macro is not used with with.
• Raise CompilerError errors when no clauses nor blocks are provided.
• Export formatter configuration via .formatter.exs.
• Support single line usage (i.e. async with a <- 1, do: a).
• Re-throw uncaught values (i.e. async with _ <- throw(:foo), do: :ok).
• Re-raise unrescued errors (i.e. async with _ <- raise("ops"), do: :ok).