The contacts and publishing plugins have duplicated classes which caused them to have a circular dependency. The contacts plugin should be consumed from the publishing plugin.
Merge branch 'master' into remove-dep-publishing

Conflicts:
	build.gradle
	src/main/groovy/nebula/plugin/contacts/ContactsPlugin.groovy
Merge pull request #3 from nebula-plugins/remove-dep-publishing

Remove dependency on publishing plugin
[Gradle Release Plugin] - pre tag commit:  '1.12.4'.
[Gradle Release Plugin] - new version commit:  '1.12.5-SNAPSHOT'.
Merge branch 'gradle-1.12' into gradle-2.0.
Fix merge conflicts.