Merge branch 'release/0.6.0' into develop
fix: make sure _mtime is a Date and not a String
improve: move error handling to the bottom and add one if != dev
fix: _mtime.getTime() still doesn't always exist
fix: pkgMeta._mtime, hopefully, finally
fix: jslint error
Bump version to 0.6.1
Merge branch 'release/0.6.1'