2.53.0

• Remove deprecated API:
  • [VIClient connect]
  • [VIClient connectWithConnectivityCheck:gateways:]
• Fix: [VIClient call:settings:] and [VIClient callConference:settings:] return null if the connection to the Voximplant Cloud has been closed while creating VICall instance
• Fix: Disabling video for an incoming call via [VICall setSendVideo:completion:] API in the background application state is failed with VICallErrorCodeAlreadyInThisState error if the call is integrated to the system call management (CallKit) and has been answered via system controls on the lock screen.