midge updates

* bumped to 1.6.3
* added lein-midje as dev plugin - v 3.1.1
added slf4j-log4j12 dev dependency
Add type hints.
bumped version to 0.5.1
Fix for NamedList conversion regression

- Commit 62ae93e introduced a regression when converting NamedList
  objects
- In previous version, covert-named-list returned a map with string
  keys converted to keywords
- The new ->clojure multi method will return a vector of 2-element
  vectors when called on a NamedList (string keys not converted)
- Unit test provided to illustrate issue
change maven groupId and version to roomkey
Merge branch 'master' into 0.6-rk

Conflicts:
	src/flux/response.clj
Merge pull request #1 from roomkey/0.6-rk

0.6 rk