dealt with some 8.20 warnings #688

Annotations

12 warnings

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v2. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Postfix notations (i.e. starting with a nonterminal symbol and

Automatically putting PA2_preds in Prop even though it was declared

Automatically putting frag_logic_binop in Prop even though it was

Automatically putting frag_logic_quant in Prop even though it was

Postfix notations (i.e. starting with a nonterminal symbol and

Closed notations (i.e. starting and ending with a terminal symbol)

Postfix notations (i.e. starting with a nonterminal symbol and

Automatically putting bijection in Prop even though it was declared