Remove log4j.properties from sources (should only be in tests or in a distribution jar).
Ignore groovy test until it passes
Set Groovy and Gremlin versions
Add JavaMigrator
Add logging module and log4j.properties at few places until we figure out how it actually get's loaded through Forge.
Fix engine/tests/ - set parent to windup-engine-parent instead of windup-parent. Before it worked due to cached artifacts.
fixed a typo in the readme
Remove SPI (which we deleted) from deps.

Format
Merge remote branch 'upstream/master'
fixing what looks like a typo in the xml