Applied recent commits to `CHANGES.md`

Bumped to v0.5.1 (refreshing `bower.json` and `textfill.jquery.json`)

Bumped to v0.5.0

finalize 0.4.0

finalize v0.3.5

finalize v0.3.4

Version 0.3.3

finalize v0.3.2

Version 0.3.1

Sizing as big as possible when MaxFontPixels <= 0. Close #8.