fixed #3 "Output a summary of the release". After releasing, the plugin outputs a summary like this, to a configurable file:
my.groupid.with.module:parent [5.1.4-SNAPSHOT] -> [5.1.4]
my.groupid.with.module:some-module-jar [5.1.4-SNAPSHOT] -> [5.1.4]
my.groupid.with.module:some-module-war [5.1.4-SNAPSHOT] -> [5.1.4]
my.groupid.with.module:some-module-ear [5.1.4-SNAPSHOT] -> [5.1.4]
my.groupid.with.other.module.blabla-util-jar [5.1.4-SNAPSHOT] -> [5.1.4]
my.groupid:release [0.0.5-SNAPSHOT] -> [0.0.5]

As you can see, the old and new version numbers are outputted. Also, when multi-module builds are part of the release process, all artifacts are outputted.