Prune a val's versions.

Useful if you want to delete a bunch of versions.

All versions before keep_since that aren't in keep_versions will be deleted!!!

You can run it without passing commit to see a preview of what will happen.

await prune_val("abcdefg", [3,6,8], 12, true);

Could output

Val: untitled_peachTakin, Current Version: 15
Deleting Versions: [ 1, 2, 4, 5, 7, 8, 9, 10, 11 ]
Deleting Version 1
Deleted
Deleting Version 2
Deleted
Deleting Version 4
Deleted
Deleting Version 5
Deleted
Deleting Version 6
Deleted
Deleting Version 7
Version already deleted, skipping
Deleting Version 8
Deleted
Deleting Version 9
Deleted
Deleting Version 10
Deleted
Deleting Version 11
Deleted

Migrated from folder: tools/prune_val