v1.5.3

1. Bug fixes

Elixir

• [Calendar] Consider microseconds in maximum possible Calendar.ISO datetime
• [Enum] Fix chunk_every/4 when step > count
• [Kernel] Warn duplicate definitions in macros
• [Kernel] Remove dialyzer warnings from else in with clauses
• [Kernel] Do not warning on upcoming @deprecated and @since attributes for v1.6
• [MapSet] Return valid MapSet when union-ing a legacy MapSet

ExUnit

• [ExUnit] Fix compiler warnings in assert_receive/3