gruntjs/grunt-contrib-imagemin — pull request #134 by panrafal (2013-12-29 02:05:00+00:00)
Title: Workaround for pnquant failing on windows by allowing to control parallel processing

Adds option to specify the parallel limit - pngquant sometimes fails when working in parallel on windows
Additionaly throws a meaningfull error if pngquant fails

Solves #69