Added rewrite of Array#[] to mruby-array-ext gem, so that arrays can be sliced
with Ranges (as a[1..-2])
String#length should be an alias of String#size
Merge pull request #1656 from h2so5/string-length-utf8

String#length should be an alias of String#size
Merge pull request #1655 from pbosetti/master

Added rewrite of Array#[] to mruby-array-ext gem
hash value of enumerable should be obtained from its elements; close #1658
hash value of enumerable should be obtained from its elements; close #1658
Merge branch 'master' of github.com:mruby/mruby
Increase test coverage of mruby-struct
Merge pull request #1659 from carsonmcdonald/threestructtests

Increase test coverage of mruby-struct
Merge branch 'master' of https://github.com/h2so5/mruby