tools: command records - NOTES always bullets, examples held by tests (#142)

Files changed:
- CHANGES.md
- VERSION
- tools/chemenu/cli_contract.py
- tools/chemenu/tests/test_cli.py
- tools/chemenu/tests/test_cli_contract.py
- tools/chemenu/tests/test_docs_verify.py

tools/chemenu/tests/test_docs_verify.py

@@ -52,7 +52,7 @@ def _fixture_record(path: str) -> cli_contract.CommandRecord:
             atomic="Yes",
             budget=cli_contract.Budget.COUNTED,
         ),
-        notes="Does a thing, mechanically.",
+        notes=("Does a thing, mechanically.",),
         failures=(cli_contract.Failure(label="", cause="It broke", reaction="Fix and retry"),),
     )
 
@@ -150,7 +150,7 @@ def test_a_phantom_synopsis_flag_is_reported(monkeypatch):
         summary="Does a thing.",
         synopsis=(cli_contract.Variant(usage="frobnicate --flag <v> --invented <v>"),),
         properties=_fixture_record("frobnicate").properties,
-        notes="Does a thing.",
+        notes=("Does a thing.",),
         failures=(),
     )
     param = click.Option(["--flag"])
@@ -188,7 +188,7 @@ def test_a_boolean_flag_pair_is_satisfied_by_either_spelling(monkeypatch):
         summary="Does a thing.",
         synopsis=(cli_contract.Variant(usage="frobnicate [--no-push]"),),
         properties=_fixture_record("frobnicate").properties,
-        notes="Does a thing.",
+        notes=("Does a thing.",),
         failures=(),
     )
     param = click.Option(["--push/--no-push"], default=True)