merging: releasing 0.12.8, the last release to support representable < 2.0. this only fixes the gemspec dependencies.

Conflicts:
	CHANGES.markdown
	lib/roar/version.rb
	roar.gemspec
Merge branch 'master' of github.com:apotonick/roar
require representable 2.0 - 2.1.
rename ::name to ::type. fixes #101. thanks to @l8nite for that suggestion.