- Everyone who has contributed code to the project has been asked to license
their contributions under LPGL and they have agreed.
- COPYING file changed to say LGPLv2.1 instead of GPLv2.
- GPL changed to LGPL in the header of every single file that a header and
header added to the few that were missing one.
- Also.. Happy new year!
- Moved implementations for different sizes to inline functions that are
defined using each other, reducing the amount of redundant code.
- Performance of sad_8bit_32x32_avx2 improved by about 10% due to unrolling of
the loop.
