No need for deep clone, just assign onto a new object each time it's called.

Refs stevelacy/gulp-stylus#101
'clone' opts.paths specifically, as we push to that.

Refs stevelacy/gulp-stylus#101
Merge branch 'master' into deepclone-fix

Conflicts:
	index.js
Merge pull request #102 from Bockit/deepclone-fix

Deep clone fix to keep stylus nodes intact