CHANGELOG.md: Fix typo

See merge request iris/iris!437

Add mapsto_ne helper lemma

See merge request iris/iris!417

Here's one case this lemma might be useful. Suppose we want to
programmatically generate namespaces for e.g. locks:

```
Definition lockN (l : loc) := nroot .@ "lock" .@ l.
```

Then to know that two such namespaces are disjoint, we need to know
that the corresponding locations are distinct. For that we use
the lemma here introduced.

```
Lemma ne l1 l2 v1 v2 :
  l1 ↦ v1 -∗ l2 ↦ v2 -∗ ⌜l1 ≠ l2⌝.
Proof. iApply mapsto_mapsto_ne. (* goal ¬ ✓ 2%Qp *) by intros []. Qed.
```

Improve `coreP` construction.

See merge request iris/iris!436

Rename auth_both_frac_op into auth_both_op

See merge request iris/iris!434

Simon Friis Vindum authored 4 years ago and Ralf Jung committed 4 years ago

Removes auth_both_op and renames auth_both_frac_op into auth_both_op.

Fix some typos in docs

See merge request iris/iris!433

Add heap_lang lib for "invariant locations": locations with a (pure) invariant attached to them

See merge request iris/iris!289

Make use of `▷^` notation in its definition.

See merge request iris/iris!428

Fix notation issues in #302 and add some missing "operator sections" for (bi)entailment

Closes #302

See merge request iris/iris!409

This works because there is already a `Reserved Notation`.

Fixed a spacing issue in metatheory.v

See merge request iris/iris!427

Fix #302, including their ASCII variants.
- Don't use quotes `'` that are not surrounded by spaces.
- However, notation `'(⊢@{' PROP } )` prevents parsing `(⊢@{PROP} Q)` using the
`⊢@{PROP} Q` notation.

To fix that, we force left-factorization: we add a notation for `'(⊢@{' PROP }
Q )`, defined to coincide with '⊢@{' PROP } Q but which can be left-factored
with `( '⊢@{' PROP } )`.

- Add left and right operator sections for (bi)entailment
- Add tests.

Also do all of the above also for ASCII notations, except for operator sections,
which seem to require more discussion.

add wp proof rule for recursive functions

See merge request iris/iris!425