Fixed Issue 13965 - More handy schwartzSort

[AurelC2G]

The goal is to be able to specify a SwapStrategy without also explicitly specifying the predicate to sort by (see example in the ticket, changelog, or the test I added).

[dlang-bot]

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	13965	enhancement	More handy schwartzSort

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "master + phobos#6999"

[wilzbach]

More tests to ensure this doesn't break in the future, but looks good otherwise 👍

Thanks!

[thewilsonator]

Someone else feel free to merge earlier.