Disable anzu temporarily due to a bug in it
Add prelude-show-foreign-packages
Revert "Disable anzu temporarily due to a bug in it"

This reverts commit 239571f17be8cff4381d583b8ea4388024f11703.
Merge remote-tracking branch 'prelude/master'

* prelude/master:
  Revert "Disable anzu temporarily due to a bug in it"
  Add prelude-show-foreign-packages
  Disable anzu temporarily due to a bug in it
1. Add ac-geiser
2. Add workgroups2