Date tokens do not handle all date types

I re-roll it to 10.2.x.

Could the issue summary be updated to the standard template.

Also recommend opening an MR as those are quicker to review and test.

Changing back to 11.x as the current development branch.

Issue summary updated as of #79.

Might have a crack at rolling the most recent patch into 11.x.

There a concern if there a large number of date formats

Following up on comment above

@smustgrave I don't personally see why there would be, tokens are already a sprawling hierarchy with hundreds if not thousands of derivatives once you include the token module. Also once they're defined I think they're pretty lightweight.

I also see a core committer has interacted with this patch and didn't raise any concerns at the time.