Bump version for development, redo profiles

Use clojure 1.3 for pom generation.
Use clojure 1.6 for development, due to requirements on tooling.  In particular cider.

Use 1.3,1.4,1.5,1.6 based on the profile for checking against multiple clojure versions in `lein all test`.  Use + in with-profiles to keep dev profile in for testing setup.
Redo multipart tests to round trip through middleware