v0.0.15

• Virtual camera support. It is now possible to create a virtual camera and dynamically provide frames to it so they are sent as your client camera to the meeting.
• Color formats have been renamed ARGB32 -> ARGB, BGRA32 -> BGRA........ RGB24-> RGB. The bytestrings with frame contents are now expected to follow the color format order. So, for example, an RGBA image will have R in the first byte, G in the second byte, B in the third byte, A in the fourth byte and so on.
• Daily.init() parameter virtual_devices is not necessary anymore. Therefore, Daily.init(virtual_devices = True) is now simply Daily.init().