Changelog #307

#21295, #21307 use GC instead of salsa interning for solver types (salves 648 MB and 31 s on self).

#21240 show parameter inlay hints for missing arguments.

#20996 add "Insert explicit method call derefs" assist.

#21309 add LSP extension to get failed obligations for a given function.

#21282 add crate_attrs field to rust-project.json.

#21270 (first contribution) fix "file emitted multiple times" errors in rust-analyzer scip.

#21276 fix reference-style links in hover.

#21304 strip invisible delimiters in MBE.

#21262 use the HIR to check for used locals.

#21032 don’t add semicolons to unit-returning function calls in argument lists.

#21278 suggest &mut T for &T in completions.

#21289 suggest &T for &&T in completions.

#21212 use variant name as variable in postfix completions for enums.

#21166 support this parameter name in closures.

#21277 fix reference stripping in expected type analysis.

#21291 fix expected type analysis for match arms.

#20438 fix guessing of braces for renamed macros.

#21293 don’t offer move_guard in blocks with multiple statements.

#21258 support add_return_type for functions defined inside closures.

#20576 support nested if-let in merge_nested_if.

#20577 fix indent in merge_nested_if.

#21266 keep expression in replace_let_with_if_let.

#21272 prepend workspace root to target file for sysroot metadata.

#21273 fix method resolution for incoherent impls when there are two sysroots in the crate graph.

#21316 call out feature freeze on IDE assists.

#21314 add "Use of AI tools" section to developer docs.

#21279 add special ErasedFileAstId used to bypassing downmapping.

#21298 pretty-print attributes up to cfg(false).

#21284 bump rustc crates.

#20439 add hint to use T![] instead of T! {}.

#20472 drop style guide entry about precondition checks.