Log Message:
Changes 0.3.1:
This is a binary compatible release.
* Add incremental decoding support for images containing ALPH and ICCP chunks.
* Python bindings via swig for the simple encode/decode interfaces similar to
  Java.

Changes 0.3.0:
This is a binary compatible release.
* WebPINewRGB/WebPINewYUVA accept being passed a NULL output buffer
  and will perform auto-allocation.
* default filter option is now '-strong -f 60'
* encoding speed-up for lossy methods 3 to 6
* alpha encoding can be done in parallel to lossy using 'cwebp -mt ...'
* color profile, metadata (XMP/EXIF) and animation support finalized in the
  container.
* various NEON assembly additions
Tool updates / additions:
  * gif2webp added
  * vwebp given color profile & animation support
  * cwebp can preserve color profile / metadata with '-metadata'