Added multicolored text and multicolored stoke.

Bump version

Updated version

Fixes claviska#64

Updated version

Fixed bug where some calls to thumbnail() would result in incorrect d…

…imensions

Fixes claviska#31

Added load_base64() method

Added opacity method, reorganized public methods for easier editing

adaptive_resize() deprecated in lieu of thumbnail(); GIFs with transp…

…arency are resized properly; fill() now supports alpha-transparency