fixes #211
replace the gif optimization with a working version
minor addition
fix gif test, fix gif optimization for palette length < 3
a break
remove a float/int problem
Update test_file_gif.py

remove warning
fixed deprecation warnings for tostring on array.array
Supressing ResourceWarnings for unclosed files in the test suite. Revert me when fixed
fix Python 2 compatibility
Merge branch 'master' of https://github.com/d-schmidt/Pillow
limit custom palette size
adjust the transparency index after successful optimize
skip transparency block if transparent color is not used after optimize
Merge pull request #228 from d-schmidt/master

working gif optimization
Merge pull request #229 from wiredfool/warnings

Fixing and Suppressing warnings revealed in #227