TODO tweak

setup.py

@@ -89,7 +89,8 @@
     # use of the extras_require ("paramiko[ed2559]") is now required for those
     # TODO 3.0: alternately, given how prevalent ed25519 is now, and how we use
     # invoke for (increasing) subproc stuff, consider making the default flavor
-    # "full" and adding a "minimal" or similar that is just-crypto?
+    # "full"/"all"? (probably sans gssapi which should remain optional; MAYBE
+    # still sans invoke as well, not everyone uses ProxyCommand or Match exec)
     # TODO 3.0: remove six, obviously
     install_requires=[
         "bcrypt>=3.1.3",