External has outlived its usefulness with the emergence of the scverse ecosystem, and should be removed.

^ This text should be expanded

TODO

• Finalize methods to keep/ merge into main namespace
  • Currently: scanorama, hashsolo, scrublet or equivalent, maybe bbknn
• Make removal plan (probably deprecation message + maybe email to authors) for
  • harmony
  • dca
  • magic
  • phate
  • palantir
  • trimap
  • sam
  • phenograph
  • wishbone
  • sandbag
  • cyclone
  • Export functionality for
    • spring_project
    • cellbrowser