Merge branch 'release-0.6' into develop
Added Mockery to dev requirements
Moved autoloading of tests to phormium config
New functions in DB to help with mocking

Also moved the information if a connection is in transaction to the
Connection object, instead of it being in DB. Makes more sense.
Fixed tests for php 5.3 (can't use Foo::class)
Don't allow test failures on PHP 5.6
Updated changelog
Moved Travis before script to a separate file
Fixed Travis config
Fixed Travis config (for real this time)
Bumped version to 0.6.1
Merge branch 'release/0.6.1'