Bump dependency versions for better nib support
Adds stylus options for middleware constructor (e.g. for compression)
Make stylus options optional
Fix syntax error and version bump
Options.use and options.set for plugin. Allow both stylus.use and stylus.set params.
Fix options.set
Fixes build with/without options
Merge pull request #7 from wejendorp/master

Pass options to stylus and update dependencies