Merge pull request #34 from ViLPy/master

Update to Release 1.6.2. DB update mechanisms
Release 1.6.6
Release 1.6.6. Missed files
Merge pull request #36 from yglushonkova/master

Release 1.6.6
Release 1.7
Travis config updated
Merge pull request #37 from yglushonkova/master

Release 1.7
Travis settings update
Merge pull request #38 from yglushonkova/master

Travis settings update