Merge pull request #310 from bradrf/feature/multipart

Support multipart post
Support multipart hashes that are nested (i.e. as split from a web-form post with indices)
Merge remote-tracking branch 'origin/master' into feature/allow-no-format-routes
use cleaner approach of copy-on-substitution for sub-paths
Merge remote-tracking branch 'origin/master' into combine/no-format-and-multipart
Merge remote-tracking branch 'origin/bug/allow-nested-multiparts' into combine/no-format-and-multipart
Merge remote-tracking branch 'origin/feature/allow-no-format-routes' into combine/no-format-and-multipart