1. Enhancements

Elixir

• [Kernel] Speed up loading of runtime modules in the parallel compiler
• [Range] Optimize range membership implementation

ExUnit

• [ExUnit] Return values from running doctests and make their order consistent

2. Bug fixes

Elixir

• [Calendar] Fix handling of negative years in Calendar.strftime/2
• [Exception] Improve blaming of FunctionClauseError with is_struct/2 guards
• [Kernel] Fix invalid variable scoping in defguard expansion
• [Kernel] Do not warn on captured underscored vars from defmodule
• [Kernel] Do not crash for missing line info on type warnings
• [Macro] Fix Macro.to_string/1 for large negative integers
• [Macro] Properly type and escape expansion of __ENV__ in macros
• [Path] Make sure Path.wildcard/2 expands .. symlinks accordingly
• [Range] Address corner cases in Range.disjoint?/2 implementation

ExUnit

• [ExUnit.DocTest] Remove unnecessary literal quotes from error message on reports