Changelog #284

#19704 add underscore mode for expression filling.

#19733 implement mut to const pointer cast for method resolution.

#19732 fix associated type bound variable starting index.

#19699 properly escape raw names in labels.

#19247 fix span info in mir::Operand.

#19723 improve parser recovery a bit.

#19581 render more lifetimes.

#19735 improve the let and letm snippets.

#19739 temporarily disable fixpoint for variance computation.

#19685 (first contribution) add PGO support to xtask install.

#19713 clean up cfg check handling in expression store lowering.

#19469 migrate merge_imports, unmerge_imports and let_else_to_match to SyntaxEditor.

#19708 de-Arc language item queries.

#19712 clean up cache priming cancellation handling.

#19731 simplify macro call id construction.

#19714 remove unnecessary extension trait.

#19719 adjust panic context printing.

#19727 remove a couple of unnecessary clones.

#19716 bump salsa (saves 212 MB on analysis-stats self).