WIP
Fix NPE when un-mapped property is encountered. Just ignore the un-mapped property
Fix buggy property removal after merging
Fix bug with cyclic dependencies between join entities during persist and merge operations
Stop implementing EntityManager & EntityManagerFactory interfaces
 Rename 'unproxy' to 'unwrap'
BREAKING CHANGES. Simplify PropertyType byte flag for Thrift persistence
Fix small bug in the Column Family comment for wide rows
Rework of runtime consistency level
Add ttl to persist and merge operations
Split JoinExtractorAndNullFilter to 2 distinct classes JoinValuesExtractor & NullJoinValuesFilter
Update release-instructions.txt
Add explicit version for Maven plugins to remove warnings during builds
[maven-release-plugin] prepare release achilles-1.8.1
[maven-release-plugin] prepare for next development iteration
Fix bug on dirty check of join collection/map
Update Change log for 1.8.1 release
Merge branch 'master' of github.com:doanduyhai/Achilles