No longer include htsmsg/htsmsg_store.h from showtime.h
prop: Add support for PROP_SET_FLOAT to prop_set() and friends
prop: Add prop_setdn()
httpserver: NUL terminate websocket packets
httpserver: If websocket init code returns error, send it in HTTP response
htsmsg: HTSMSG_INDEX() instead of name returns indexed field for htsmsg_get_...() functions
gvl: Handle integer types in changed()
Initial stab of STPP over websocket

STPP is Showtime Property Protocol that allows remote access to
all of Showtime's internals and in should in the end be capable
of supporting fully featured remote control apps