Bump NPM version to 0.3.0 in preparation for publishing.
Bump NPM version to 0.3.0 in preparation for publishing.

The minor version bump is due to a major improvement (#65 and #67):
regenerator now supports rewriting let/const declarations as var
declarations, thanks to the work of @termi and @olov's
https://github.com/olov/defs library.

jlongster/transmogrifier,RReverser/js-goto-transpiler,RReverser/js-goto-transpiler,liviuignat/regenerator,kittens/regenerator,facebook/regenerator,sebmck/regenerator,jlongster/unwinder,sebmck/regenerator,facebook/regenerator,facebook/regenerator,Jericho25/regenerator,rafaelstz/regenerator,rafaelstz/regenerator,juliocanares/regenerator,jlongster/transmogrifier,juliocanares/regenerator,jlongster/unwinder,jlongster/unwinder,kittens/regenerator,liviuignat/regenerator,Jericho25/regenerator