Merge branch 'remove-multiple-protocol-support'
Refactor: Use size_t for {w,r}streams.c
Refactor: Use "refcount" memory management for WStream buffers

Now `wstream_write` receives pointers for WBuffer objects(created with
wstream_new_buffer), which stores a reference count to determine when it's safe
the free the buffer. This was done to enable writing of the same buffer to
multiple WStream instances
Add kvec.h macro library
API: Events: Add support for broadcasting events

The channel_send_event will now broadcast events to all subscribed channels if
the 'id' parameter is 0.
API: Events: Automatically pass channel ids to API functions

The dispatch function generator was customized to allow for API functions to
declare a 'channel_id' as first argument.
API: Events: Add functions for {un}subscribing to broadcasted events
Temporarily change python repository