Add `explain` method to query builder
Fix Firebird test connection issue
Tracking down a test bug for sqlite
Update sqlite test for explain, attempt firebird tests on Travis CI
Add another test and try again
Another attempt at getting firebird running on travis ci
Try, try again
Another shot
php has to have that 5
Firebird seems a lost cause, let's try testing on HipHop
Make Hiphop failures okay