[test] aref-setter returns #t for <generic-function>, so this is not an issue
anymore.
Fix whitespace
[test] Add check names in character test suite
[test] Fix iteration end check in sequences-element-id?, which caused
some tests in at least test-character-suite to fail. Some variables
have been renamed in the process for better uniformity.
[test] replace \==.complement by simpler \~==
Fix typos.
Added release note.