Merge branch 'hotfix/0.3.1'
Merge branch 'release/0.3.2'
Merge branch 'release/0.3.3'
Merge branch 'release/0.3.4'
Merge branch 'release/0.3.5'
Merge branch 'release/0.4.0'
Ready for JRuby
Merge branch 'feature/jruby' into develop