Release notes for 649

Adds Workspace.RenderingCacheOptimizations property.

Changes EditableMesh to inherit from Object and live outside the DataModel.

Adds caching between identical Sky faces in ViewportFrame.

Optimizes Instance:FindFirstChildWhichIsA() 20x for parent instances with many children. Optimizes Object:IsA() 30%.

Allows developer plugins to trigger the opening of the directional curve editor.

Fixes light invalidation attached to nested bones in animations.

Changes first argument of Class.AssetService:CreateEditableImageAsync () and Class.AssetService:CreateEditableMeshAsync () to Content.

Makes the SunRaysEffect post-processing effect apply with consistent intensity across different screen resolutions.

Makes AssetService:CreateEdtiableMeshFromPartAsync() non-functional; switch to AssetService:CreateEdtiableMeshAsync().

Updates AssetService:CreateMeshPartAsync() to accept new Content type.

Adds "Occlusion Culling" as a Studio beta feature.

Introduces selection mode support for UIDragDetector.

PluginGui:GetRelativeMousePosition() now returns accurate values during a drag-and-drop operation, allowing you to implement responsive drop UX. This can be combined with the soon-to-be-added "roblox/selection` Mime-Type, allowing you to handle drag-drops of instances from the Explorer into a community plugin.

Fixes a potential crash when using multiple Actors in plugins to raycast on a WorldModel.

Update the typing of table.freeze() in the "New Luau type solver" beta to appropriately require its arguments to be a table, and to enforce that properties are subsequently read-only after calling it.

Makes BlurEffect apply with consistent intensity across different screen resolutions.

Fixes an audible "click" when creating and immediately using AudioEmitters or AudioListeners.

Fixes a crash in the "New Luau type solver" beta when type checking code that does not successfully parse, for example while the user is midway through typing a valid code block.

Fixes an issue with incremental collision geometry to make it more robust in some edge cases.

Fixes a bug in the "New Luau type solver" beta where string.format() calls without any arguments would not raise an error in strict mode.

Fixes an issue with Scriptable cameras being overwritten by menu settings.

Fixed the "Import" button when using "Import From Roblox" from the Animation Editor.

Fixes pathfinding computing an invalid path in certain circumstances.

"Paste Into" will always parent the inserted instances under exactly the specified parent, rather than applying special parenting rules such as putting Atmosphere under Lighting.

Fixes API dump handling of classes deriving from Object; they will now show up as Category: Class as intended.

Improves error messaging and type checking for require-by-string.

Anchored characters with Humanoid.BreakJointsOnDeath turned off on their Humanoid now replicate the Dead state.