go-libwebp 0.3.0

• Explicitly set CGO optimization level to -O2
• Other small changes and cleanup

go-libwebp 0.2.0

• Add support for all image.Image, even if it's not efficient yet
• Register WebP format for use with image.Decode
• Change capitalized error messages to lower case
• Add some ToDo comments
• Prevent nil dereference in some cases where no config is supplied

go-libwebp 0.1.0

First release with libwebp 1.3.2