* Don't use an implicit-object if the lang version doesn't support it (PR: [#77437](dotnet/roslyn#77437))
* Fix issue where we were changing semantics when converting to a collection expr. (PR: [#77417](dotnet/roslyn#77417))
* Detect and emit more idiomatic null check patterns (PR: [#77412](dotnet/roslyn#77412))
* Partial events and constructors: IDE (PR: [#77337](dotnet/roslyn#77337))
* Simplify keyword recommenders. (PR: [#77396](dotnet/roslyn#77396))
* Remove async/await (PR: [#77397](dotnet/roslyn#77397))
* Preserve encoding during DocumentState updates (PR: [#77354](dotnet/roslyn#77354))
* Don't realize the SourceText in SyntaxTree.OverlapsHiddenPosition if not needed (PR: [#77334](dotnet/roslyn#77334))
* Handle ModuleCancellationTokenExpression in AbstractFlow visitor (PR: [#77310](dotnet/roslyn#77310))
* PERF: Reduce the number of nodes walked during import completion commit. (PR: [#77305](dotnet/roslyn#77305))
* Allow expression body refactorings on non empty selections (PR: [#76969](dotnet/roslyn#76969))
* Partial events and constructors: public API (PR: [#77202](dotnet/roslyn#77202))
* Refresh diagnostics when fading options change (PR: [#77322](dotnet/roslyn#77322))
* Reduce allocations during completion in FilterToVisibleAndBrowsableSymbols (PR: [#77315](dotnet/roslyn#77315))
* Change override completion to select text after updating the buffer. (PR: [#76983](dotnet/roslyn#76983))
* Fix false positive 'Unnecessary assignment of a value' (PR: [#77297](dotnet/roslyn#77297))