Save timestamps for individual files & re-run the task on change

[mgol]

Sometimes when working with Git you need to checkout an earlier commit; running newer:task:target will then not regenerate the file since its timestamp is earlier than the one saved by grunt-newer.

It'd be useful if grunt-newer saved time stamps for every source file the task is run on and that it would re-run the task if the timestamp changed in any direction, not just if it got newer than the generated file.

[mgol]

Hm, actually, it seems Git always updates timestamps so this shouldn't be an issue. Closing.

[tschaub]

Yeah, many things depend on git always updating mtime on changed files.