Merge pull request #10 from potfur/dev

additional testing
Merge pull request #11 from potfur/dev

upgrading code quality
Merge pull request #12 from potfur/dev

last updates before RC
Merge pull request #13 from potfur/dev

mutator
ver to RC1, added suggestion psr/log
Merge pull request #15 from potfur/dev

ver and suggestion
v
v
refactored method
fixed table method signature
fixed phpdoc and type casting
fixed phpdoc
minor
added php5.6
relaxed operation type hint
Merge remote-tracking branch 'origin/dev' into dev