Add changelog for 3.5.2-RC1

changelogs/3.5.2-RC1.md

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+# Highlights of the release
+
+- Add the -Wall option that enables all warnings (Plan B) [#20577](https://github.com/scala/scala3/pull/20577)
+- Add origin filter to WConf, DeprecationWarning [#21404](https://github.com/scala/scala3/pull/21404)
+
+# Other changes and fixes
+
+## Implicits
+
+- Streamline `tryNormalize` with `underlyingMatchType` [#20268](https://github.com/scala/scala3/pull/20268)
+
+## Infer
+
+- Fix #20521: Optimise caching for computing atoms and widened in OrTypes [#21223](https://github.com/scala/scala3/pull/21223)
+
+## Infrastructure
+
+- Add the project's icon for Intellij [#21188](https://github.com/scala/scala3/pull/21188)
+- Add the link to scala's security policy [#21220](https://github.com/scala/scala3/pull/21220)
+- Add _spec to dependabot [#21227](https://github.com/scala/scala3/pull/21227)
+- Bump redcarpet from 3.5.1 to 3.6.0 in /docs/_spec [#21231](https://github.com/scala/scala3/pull/21231)
+- Bump webrick from 1.7.0 to 1.8.1 in /docs/_spec [#21232](https://github.com/scala/scala3/pull/21232)
+- Bump VirtusLab/scala-cli-setup from 1.4.0 to 1.4.1 [#21233](https://github.com/scala/scala3/pull/21233)
+- Bump VirtusLab/scala-cli-setup from 1.4.1 to 1.4.3 [#21371](https://github.com/scala/scala3/pull/21371)
+- Bump VirtusLab/scala-cli-setup from 1.4.3 to 1.5.0 [#21441](https://github.com/scala/scala3/pull/21441)
+- Update ScAS [#21283](https://github.com/scala/scala3/pull/21283)
+- Bump hamzaremmal/sdkman-release-action from 4cb6c8cf99cfdf0ed5de586d6b38500558737e65 to 1f2d4209b4f5a38721d4ae20014ea8e1689d869e [#21440](https://github.com/scala/scala3/pull/21440)
+
+## JVM Backend
+
+- Update asm to patched 9.7 [#20144](https://github.com/scala/scala3/pull/20144)
+
+## Overloading
+
+- Report only non-overridden unimplemented members [#21337](https://github.com/scala/scala3/pull/21337)
+
+## Parser
+
+- SimplePattern errors should now be recovered as wildcard instead of unimplemented expr [#21438](https://github.com/scala/scala3/pull/21438)
+
+## Pattern matching
+
+- Fix a bundle of patmat issues [#21000](https://github.com/scala/scala3/pull/21000)
+
+## Positions
+
+- Fix trailing comma Ident's span [#20445](https://github.com/scala/scala3/pull/20445)
+
+## Presentation Compiler
+
+- fix: don't use color codes for pattern match code action [#21120](https://github.com/scala/scala3/pull/21120)
+- fix: don't add suffix if brackets already present [#21259](https://github.com/scala/scala3/pull/21259)
+- Backport from metals [#21196](https://github.com/scala/scala3/pull/21196)
+- change mock symbol search [#21296](https://github.com/scala/scala3/pull/21296)
+- fix: completions when parenthesis already provided [#21299](https://github.com/scala/scala3/pull/21299)
+- Weekly metals backport [#21343](https://github.com/scala/scala3/pull/21343)
+- Help implement Metals' infer expected type feature [#21390](https://github.com/scala/scala3/pull/21390)
+- feat: Implement completions for named tuple fields [#21202](https://github.com/scala/scala3/pull/21202)
+
+## Runner
+
+- Wrap the arguments passed to the scalac task between " [#21322](https://github.com/scala/scala3/pull/21322)
+
+## REPL
+
+- Allow JLine to fall back to a dumb terminal [#21330](https://github.com/scala/scala3/pull/21330)
+
+## Semantic DB
+
+- fix: semanticdb symbol creation when `targetName` set [#20950](https://github.com/scala/scala3/pull/20950)
+
+## Tasty Format
+
+- add child to parent in completion context [#21214](https://github.com/scala/scala3/pull/21214)
+
+## Transform
+
+- Fix #20856: Serialize `Waiting` and `Evaluating` as if `null`. [#21243](https://github.com/scala/scala3/pull/21243)
+
+## Typeclass Derivation
+
+- Revert "Compensate loss of transitivity" [#21356](https://github.com/scala/scala3/pull/21356)
+
+## Typer
+
+- Avoid forcing ctors & parents which caused cycles [#17086](https://github.com/scala/scala3/pull/17086)
+- Fix isomorphism tests of `AndOrType`s under non-empty `BinderPairs` [#21017](https://github.com/scala/scala3/pull/21017)
+- Fail when a poly function value has a different number of type params than the expected poly function [#21248](https://github.com/scala/scala3/pull/21248)
+- Fail early & more clearly on shaded-broken classfiles [#21262](https://github.com/scala/scala3/pull/21262)
+- A tweak to type improvement [#21312](https://github.com/scala/scala3/pull/21312)
+- Fix #20897: Make `Nothing ⋔ Nothing`, as per spec. [#21241](https://github.com/scala/scala3/pull/21241)
+
+# Experimental Changes
+
+## Modularity
+
+- fix: Only implement a deferred given in a class if its parent won't implement it [#21206](https://github.com/scala/scala3/pull/21206)
+
+## Named Tuples
+
+- Re-use isConcrete checking in match types for NamedTuple.From [#20947](https://github.com/scala/scala3/pull/20947)
+- fix: Dealias NamedTuple's name types when resolving NamedTuple's element types [#21331](https://github.com/scala/scala3/pull/21331)
+
+## Safe Global Initialization
+
+- Fix exception on sequence matching with drop [#21281](https://github.com/scala/scala3/pull/21281)
+- Fix uninitializing fields when evaluating a cached constructor call in global initialization checker [#21403](https://github.com/scala/scala3/pull/21403)
+
+# Contributors
+
+Thank you to all the contributors who made this release possible 🎉
+
+According to `git shortlog -sn --no-merges 3.5.1..3.5.2-RC1` these are:
+
+```
+  21  Dale Wijnand
+  12  Eugene Flesselle
+  11  Katarzyna Marek
+    6  dependabot[bot]
+    5  Wojciech Mazur
+    4  Hamza REMMAL
+    4  Kacper Korban
+    4  Martin Odersky
+    4  Som Snytt
+    4  Yichen Xu
+    4  kasiaMarek
+    3  Jamie Thompson
+    2  EnzeXing
+    2  Hamza Remmal
+    2  Sébastien Doeraene
+    1  Jan Chyb
+    1  Jędrzej Rochala
+    1  Kavin Satheeskumar
+    1  Martin Duhem
+    1  Matt Bovel
+    1  Raphael Jolly
+    1  noti0na1
+    1  philippus
+
+```