Merge branch 'release/0.1.0'
Merge branch 'release/0.1.1'
Merge branch 'release/0.2.0'
Merge branch 'release/0.2.1'
Add a dry-run mode

In dry-run mode, no files are changed, but chnages to be made are displayed.
Updated project.clj, release notes and readme for 0.3.0
Merge branch 'release/0.3.0'
Merge tag '0.3.0' into develop

lein-set-version-0.3.0
Updated version for next release cycle