gruntjs/grunt-contrib-copy — pull request #193 by zhiyelee (2014-09-27 15:06:25+00:00)
Title: do not keep the mtime when file contents changed

As discussed in #192 , mtime should not be kept when file contents were changed.

cc @shama @sindresorhus @thorn0

PS: I also rm a unused variable `kindOf` and a redundant `,`