0.0.7: workaround for a lein2-related issue (:without-profiles)
0.0.6: really prepare for use with Leiningen 2.0
NB. the changes to write-version-file-hook and the tests are a stopgap
to be replaced with something less brittle in 0.0.7.
0.0.5: prepare for use with Leiningen 2.0
...without breaking Leiningen 1.x support.
0.0.4: tag new version
0.0.3: hook pom, set :version on project
0.0.2: also hook deploy task when resolvable