List maximal_relations()/maximal_faces() in the 2.0 relations highlights

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M3tQymUTA9FSWEPNcnyy9P

Author: wmayner

docs/whats-new-in-2.0.md

@@ -54,6 +54,9 @@ relations.phi_mean_std()      # exact mean and std of φ_r
 relations.max_phi()           # the strongest relation's φ_r
 relations.binding_matrix()    # how strongly each pair of unit-states is
                               # bound by relations (as a DataFrame)
+relations.maximal_relations() # the inclusion-maximal relations — the
+                              # facets of the relation complex
+relations.maximal_faces()     # the inclusion-maximal relation faces
 ```
 
 Three more tools cover what closed forms can't: