Changelog #222

#16489 (first contribution) create alias when renaming an import.

#16589 add unresolved-ident diagnostic.

#16303 add non-exhaustive-let diagnostic.

#16475 support multiple tab stops for edits in VSCode.

#16358 (first contribution) deduplicate references from macro expansions.

#16621 (first contribution) avoid setting RUSTC_BOOTSTRAP for build scripts, to prevent spurious recompiles.

#16590 fix remove-unnecessary-else false positives on if expressions.

#16616 try to fix potential server hang with build scripts.

#16645 fix deadlock between recreate_crate_graph and file_line_index.

#16618 don’t escape { in assists.

#16637 account for string delimiters correctly in proc macro server.

#16606 render associated item owner in hover for items other than functions.

#16654 (first contribution) add -V shorthand for --version.

#16643, #16652 reduce salsa memory usage.

#16612 fetch toolchain and data layout for detached files.

#13112 set up handling of auto trait bounds, but leave it disabled due to performance problems.

#16617 attempt to add a timeout to rustc_tests.

#16648 pin rustc-tests commit.

#16649, #16650 disable rustc-tests metrics.

#16601 check out repository before running typos.

#16646 remove some repeated words.

#16668 sync from downstream.