Merge branch 'release/0.1.4' into develop
Updated version for next release cycle
Require clojure 1.4

Also drops usage of slingshot.
Throw on deref if :exception in operation map

Use wait-for to access the operation result without throwing.
Update to pallet-fsm 0.2.0
Updated project.clj, release notes and readme for 0.2.0
Merge branch 'release/0.2.0'