Bump version for next beta release
Update the Changelog with hash improvements
Add failing specs for defining methods on modules
Always define module methods using Opal.defn()
Only donate methods inside the runtime
Cleanup def node generation
Methods defined in reopened modules should not overwrite methods defined by class
Stop exposing Opal.donate - it is now a private method
Fix broken method chains on methods donated by modules
cleanup some module defn functions
Document use of iclass in append_features
Ensure a module can redefine a method it defined before
Add module fixes to changelog
Fix changelog
Support RUBY_ENGINE/RUBY_PLATFORM != 'opal' directives
move spec docs to spec/
Begin/rescue blocks should evaluate to their last expression. Fixes #549
Document some runtime methods
Remove old Opal.cget runtime helper