* db log file added
* still on Kryo Serialization
* build files updated commit
Merge branch 'java-serialization'

Conflicts:
	build/classes/it/holiday69/tinydb/bitcask/file/utils/DBFileUtils$1.class
	build/classes/it/holiday69/tinydb/bitcask/file/utils/DBFileUtils$2.class
	build/classes/it/holiday69/tinydb/db/handler/AsyncPutHandler$PutWorker.class
	build/classes/it/holiday69/tinydb/db/handler/AsyncPutHandler.class