Added a separate class for handling hypertext (tagged
text used in conversations, etc) in preparation for the
addition of Autotext, which will also use it.
The data in a lot of action record types has a fixed number
of rects in an array, only some of which is actually filled.
readRectArray() has now been modified to take in an
additional parameter indicating the max number of rects
that could be present in the passed stream, so it can
automatically skip to the end, reducing boilerplate code
in calling functions. The function now also appends rects
to the provided array, rather than overwrite them. Also, all
readRect() variants now do not extend rects by 1 pixel when
they are empty, ensuring calls to isEmpty() succeed.
Added facilities for deferred loading of data that would take
far too long for a single frame. Deferred loading is
executed after the regular loop, where the system would
previously just sleep. Added deferred loading to RaycastPuzzle, which now no longer freezes the game
while initializing.
