0.10.0

• (breaking change) def arguments must always be enclosed in parentheses
• (breaking change) A space is now required before and after def return type restriction
• (breaking change) Renamed Dir.working_dir to Dir.current
• (breaking change) Moved HTML::Builder to its own shard
• (breaking change) String#split now always keeps all results (never drops trailing empty strings)
• (breaking change) Removed Array#buffer, StaticArray#buffer and Slice#buffer. Use to_unsafe instead (so unsafe usages are easier to spot)
• (breaking change) Removed String#cstr. Use to_unsafe instead (so unsafe usages are easier to spot)
• Optimized Range#sum (thanks @makenowjust)
• Allow forward declarations for lib external vars
• Added Int#to_s(base) for base = 62 (thanks @jhass)
• JSON.parse now returns JSON::Any, which allows traversal of JSON objects with less casts
• Added OpenSSL::PKCS5 (thanks @benoist)
• MemoryIO can now be created to read/write from a Slice(UInt8). In this mode MemoryIO can't be exapnded, and can optionally be written. And when creating a MemoryIO from a String, it's non-resizeable and read-only.
• Added Object#!~ (the opposite of =~)
• at_exit now receives that exit status code in the block (thanks @makenowjust)
• Allow using Set in JSON mappings (thanks @benoist)
• Added File.executable?, File.readable? and File.writeable? (thanks @mverzilli)
• Array#sort_by and Array#sort_by! now use a Schwartzian transform (thanks @radarek)
• Added Array#each_permutation, Array#each_combination and Array#each_repeated_combination iterators
• Added optional random argument to Array#sample and Array#shuffle
• The delegate macro can now delegate multiple methods to an object (thanks @elthariel)
• Added basic YAML generation (thanks @porras)