v0.4.0

• The pngquant option is now false by default instead of true

v0.3.0

• Add interlace option for GIF files

v0.2.0

• Add gifsicle and pngquant
• Cache images so only changed images are optimized
• Default optimizationLevel to 7 and progressive to true

v0.1.4

• Fix exception when running in verbose mode

v0.1.3

• Fix OptiPNG not being able to overwrite file
• Allow overwriting src when dest/src is the same
• Limit to 10 concurrent optimizations

v0.1.2

• Fix OptiPNG not working on some systems
• Prevent OptiPNG from producing .bak files

v0.1.1

• Switch to this.files API
• Fix task not creating destination folders
• First official release for Grunt 0.4.0