tests reorganized a bit
misc improvements
test improved
QueryContext - removed ndbtCompatibility (potentional BC break)
JoinableQuery - now wont unnecessarily try to get references for table/alias in FROM.
added hydrator fetch pairs
added/removed some tests
Selection - added methods whereOr and whereAnd
added connection configuration tests
improved configuration via Nette\Extension
Update README.md
Merge branch 'master' into v1.0