Bump version to 3.7.0 (part 2)

Bump versions to 3.6.1

Fix a silly little language bug

Refresh element and/or trigraph docs from recent commit

Refresh element and/or trigraph docs from recent commit

Update pyproject.toml

Update pyproject.toml to 2.22.3

Delete setup.py

Update pyproject.toml 🫠

Update build.sc