use UMD for browser build too. babel config to transpile for-of loops…

… differently

Merge branch 'master' of github.com:nylki/lindenmayer

version bump and final tweaks

bump version and prepare for new release.

Actually add default ignoredSymbols as described in README. Also remove

superflous argument. resolves #19.

version bump

update dev dependencies; bump babel env browser versions

update dev dependencies; bump babel env browser versions

Add minify build script

Merge branch 'master' of github.com:nylki/lindenmayer