Add possibility to use cassandra column TTL feature

TTL can be provided by annotation @TimeToLive on class or by
new methods in DAO.
FieldFilters can't be used in entity with @TimeToLive annotation.

Also add test for this feature - test passed.
Merge pull request #6 from crazyproger/develop

Add possibility to use cassandra column TTL feature
TTL review
Fix TTL test
hercules 0.4.16
prepare new release
Fix DataOperationProfile
prepare new release
fixes #7 fix log
Merge pull request #7 from crazyproger/develop

Fix wrong log format
release 0.4.18
prepare for new development iteration