Split the commands in the travis config to make build failure less likely.
Have travis emit the version of maven it's using
Rename groupIds in prep for publishing on maven central
Bring usage of astcreator up to 1.6.4 to match release on maven central
Preparation of the root pom.xml for publishing on maven central
Merge commit '0bf068cac5f3268c5420d53614e25df2ed63494a' into jwc/central
Setup travis to automatically deploy snapshot artefacts to sonatype when
building the development branch.