This will ensure that our claim that this module works with any framework 4.x
version is tested.
Note that 4.0.0-4.0.4 has some issues with its own test suite so we are
using 4.0.5 to test this.
* BUG Enum value change wasn't being detected by alterTableAlterColumn because backslashes were not accounting
* BUG Update renameTable to also rename constraints
* BUG Add unit tests to cover requireTable and renameTable
* Fix liniting errors
* MINOR Update build to use xenial and add extra PHP version
Now that we have support for PHP7 in SS 3.x, we should test the Postgres module against it.
I've set up the tests to run weekly on this branch (and master) via TravisCI new cron job feature.
While we have a nightly "all modules" run in silverstripe-installer, it doesn't have the same matrix coverage as this run here.
I've also removed removed tests against older (and unsupported) 3.x releases (it was testing against 3.2)