Merge branch 'release/0.1.2' into develop
Add release notes
Add logging of cache hits on closed connections
Update to latest ssh-transport
Require clojure 1.4.0

Updates to latest ssh and local transports, and drops slingshot usage
Fix ssh connection caching
Fix ssh test for ssh-transport exception changes
Update readme and release notes for 0.2.0
[maven-release-plugin] prepare release script-exec-0.2.0
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/0.2.0'