Prepare v0.6.6 for release

Prepare v0.6.5 for release.

Prepare new release v0.6.4

v0.6.3 release ready.

Merged fix that prevented modification of data urls.

Ready for v0.6.2 release.

Version 0.6.1

Add browserify as dev dep and prefer global install

Release v0.5

Jumping from 0.4.1 due to major changes to API, design, etc