Squashed 'musicbrainzws2-java/' content from commit f6840a0

git-subtree-dir: musicbrainzws2-java
git-subtree-split: f6840a01e5678a9ca7a77ec8e64d834ec4bd5a40
Merge commit 'ea063b7c797bbe8096cba15e8760e3537243e834' as 'musicbrainzws2-java'
Squashed 'musicbrainzws2-java/' changes from f6840a0..a15bb5d

a15bb5d Removed dependency to log4j as it doesn't seem to be necessary

git-subtree-dir: musicbrainzws2-java
git-subtree-split: a15bb5d4807e595318cf77443ae4f479453134d6
Merge commit '5c4ac0084e05fc19e7c9a64c124fcb21c0f709b1' into develop
Removed musicbrainzws2-java code and replaced it with a maven dependency.
Added musicbrainzws2-java as child module to parent POM.
musicbrainzws2-java is pulled as subtree while there is no release on maven central yet.
Removed coverartarchive-api snapshot subtree (workaround) and and replaced it with proper version from maven central.