Merge pull request #4 from pPomCo/gha-ITP2023 · pPomCo/belgames@277a1cf

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/

Notation "[ rel _ _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ : _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ & _ | _ ]" was already used in scope

Notation "[ rel _ _ in _ & _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ | _ ]" was already used in scope fun_scope.

Notation "[ rel _ _ in _ ]" was already used in scope fun_scope.

Notation "_ + _" was already used in scope nat_scope.

Notation "_ - _" was already used in scope nat_scope.

Notation "_ <= _" was already used in scope nat_scope.

Notation "_ < _" was already used in scope nat_scope.

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