MJIT Support in Ruby 2.6
Ruby 2.6 Range#cover? accepts Range object as argument
Ruby 2.6 adds RubyVM::AST module
Ruby 2.6 adds Enumerable#filter as alias of Enumerable#select
Ruby 2.6 adds support for non-ASCII capital letter
Ruby 2.6 adds write_timeout to Net::HTTP
Ruby 2.6 adds Dir#each_child & Dir#children instance
Ruby 2.6 adds exception parameters for Integer & Float methods
Ruby 2.6 adds Binding#source_location
Ruby 2.6 adds String#split with block
Ruby 2.6 raises exception for else without rescue
Ruby 2.6 adds endless range
Ruby 2.6 added option to raise exception in Kernel#system