Release notes for 475

Fixed some bugs with generic variadics

• Calling a function returning a generic variadic would produce spurious errors about not enough results
• Using a generic variadic argument as an expression would crash.

Enabled Assembly-based Collision Detection optimization.

Table field access and assignment is now faster when the field value is or was nil

Made Studio command names and descriptions more consistent in regards to wording and style.

• Luau now provides type information for unchecked modules (but errors are silenced).
• Improved Luau detection of cyclic requires between checked and unchecked modules.
• Improved Luau error messages for cyclic requires.
• Luau configuration files are now per-directory rather than per-module.

Generic parameters and variadic generic parameters can no longer have the same name.

Fixed rare crash when user input occurred before/after the viewport had loaded in/out.