Extend `iInduction` with support for induction schemes containing `Forall`.

Closes #430

See merge request iris/iris!731

big_op: weaken all Absorbing conditions using TCOr and Affine

See merge request iris/iris!757

For all big_op lemmas which had an `Absorbing` condition, the condition
has now become an alternative between `Affine` and `Absorbing`. Thus the
lemmas are made more general. This change is spreading the use of the
`TCOr (Affine _) (Absorbing _)` pattern.

Stop `iAssumption` from unifying evar premises with `False`

See merge request iris/iris!772

Iris 3.6.0 release notes

See merge request iris/iris!777

unstage mono_list algebra

See merge request iris/iris!761

mono_nat algebra: add dfrac support and notation

See merge request iris/iris!759

don't make frame_fractional an instance

Closes #351

See merge request iris/iris!739

remove auth_frac_op lemmas

See merge request iris/iris!774

rename the new dfrac_agree update lemmas for consistency

See merge request iris/iris!769

Fix bi_rewrite_relation hint priority

See merge request iris/iris!773