Remove old corelib rake tasks - use 'rake dist' now
Add RUBY_ENGINE_VERSION
Remove changelog (now on website/github)
Make output buffer for ERB files slightly more dynamic

This will allow custom output buffers to be passed in to capture
result. Defaults to an array, but more advanced view systems using ERB
may require buffers to be stacked, which this now allows.
Add #append_path helper to Builder
Add very basic compiler instructions to README
Use s(:int) and s(:float) for numerics in AST (#305)

This changes from using a s(:lit) for numerics, and gives each node
its own proper type. Specs updates to reflect changes.
Remove all s(:lit) nodes from AST tree (#305)

All lit nodes are now replaces with respective int, float, regexp, sym
nodes.
Cleanup white space in array.rb
Move json.rb into stdlib (from corelib)

This makes json requirable, as it should be. It is no longer bundled in
the corelib runtime and needs to be required when used.
Fix broken json specs (make sure we require json when we use it)
Fix bug resulting in non-array is top fragment result