Moved Quick Auth out of experimental and enhanced functionality:
Use sdk.quickAuth.getToken() in place of sdk.experimental.quickAuth(). getToken will store the token in memory and return if it not expired, otherwise a new token will be fetched. Developers no longer need to manage keeping this token around or checking expiration and can make calls to getToken whenever needed.
Added fetch which is a wrapper around the browser Fetch API that adds a Quick Auth token as a Bearer token in the Authorization header.
Added cast_share location type for share extensions, enabling Mini Apps to receive shared casts from the system share sheet
Extended the cast object in cast_embed and cast_share contexts to include comprehensive metadata (author details, timestamps, mentions, embeds, channel)
Made url optional in actionLaunchFrameSchema - when not provided, it defaults to the current webpage URL (including query parameters) (see discussions/189)