Rename Comparator::diffTable() params - from/to instead of 1/2

Migrate jobs away from Travis to Github Actions 

Minor CS improvement - use ::class for TestCase::expectException input

It should be faster, and will result in one fewer CI platform to
maintain.

Add Statement::fetchAllIndexedAssociative() and ::iterateIndexedAssociative()

Static analysis workflow

It is more concise.

The end goal is to have a generic workflow that can be contributed back
to our .github repository.

I somehow missed another occurrence.

When we push to a branch on origin and make a PR, we see double the
normal amount of jobs because of this.

Modernize existing ga

Add Statement::fetchAllKeyValue() and ::iterateKeyValue()

Using moving aliases has proven troublesome in the past.

This must have been forgotten in a previous commit I made about this.

Static analysis improvements

Fix regression in QueryBuilder::and|orWhere()

Bump Psalm level to 4

Update PHPUnit to 9.4

Fix handling existing SQL Server column comment when other properties change

#4295 Keep master, slaves, keepReplica params in MasterSlaveConnection