Rename Presenter#parser to #processor
Allow Enumerator instance to be passed to #for and #match (and by extenstion, #repeat)
Don't require block to be passed to #for (and by extension, #repeat)
Allow port to be specified on server startup

pakyow server [environment] [-p port]
Support unique root view name per view store

Each view_lookup_store will use its name to check for a matching
default_view. If a match is found, it will be used as the root view. If
a match is not found, the :default default_view will be used.
Modify port specification syntax
Merge pull request #58 from metabahn/misc_0.8_fixes

Misc 0.8 fixes