There's a very low risk of these conflicting with Coq's standard library

This version allows one to either close or cancel the invariant after opening it.

These results turned out to be neither that useful nor canonical, and can easily
be derived from local updates.

This reverts commit 465dd9f4.

Thanks to @jung for proposing these names.

Enable test suite to check printed output

See merge request FP/iris-coq!147

This fixes issue #187.

move test suite out of theories/ so it does not get installed; also check output of test suite so that we can test printing

`sed -i 's/frag_auth_op/frac_auth_frag_op/g' $(find -name "*.v")`

accessor-style iInv without Hclose

See merge request FP/iris-coq!143

fix `head_stuck`

See merge request FP/iris-coq!144

Derive löb induction from later introduction and guarded fixpoints

See merge request FP/iris-coq!145

- Make `flöb_pre` and `flöb` local to the proof.
- The metavariables `Ψ` are used for predicates, so use a `Q` here.