Merge branch 'release/0.5.3' into develop
Bump project version to 0.5.4-SNAPSHOT for further development.
Wrap ClojureScript dependencies/plugins in dev profile. Upgrade ClojureScript, cljx and clourescript.test libraries.
Update project.clj for 0.5.4 release.
Update README for 0.5.4.
Merge branch 'release/0.5.4'