Twilight Forest dimension land-level and sea-level is much lower than other dimensions, so angels spawn uncontrollably unless I am willing to set their max spawn height to 5.
Possible solution: add a dimension ID "blacklist" to the config. If desired, ignore if the user tries to blacklist the overworld (if they add "1" to the blacklist). Aside from this, the config is very flexible and well-implemented.
See #23

@sky0-1 I might implement something a little more advanced than this. But I will add this.

This has been added as of commit 837b7bc