Release Notes for 556

Improved how assembly root parts are calculated. Part sizes are no longer quantized to 1/50 studs^2 when determining which part in an assembly is the "biggest" to be considered the root part.

Added beta feature for string interpolation, a way to create formatted strings in Luau without needing to call string.format.

Fixed a null pointer exception in type normalization.

Fixed a performance issue with gizmos if you have never pressed Tab.

The properties window will no longer clear the search filter when you select a new instance.