v0.15.1

Version 0.15.1

v0.15.0

Release version 0.15.0

v0.14.4

Version 0.14.4

v0.14.3

Fix issues in transparency palette reduction and release version 0.14.3

v0.14.2

Fix two bugs in reducing palette and release version 0.14.2

v0.14.1: Merge pull request #55 from shssoichiro/54-Fix-Broken-zlib

Remove zlib dependency, which broke with the new version of zlib

v0.14.0

Release 0.14.0

v0.13.1

Bump version

v0.12.0

Bump to 0.12.0

appveyor-test-1: Add appveyor.yml

See #49