* Most of the main entry points that can fail with relevant reasons now has a
way of specifying a message to return with it. This message can be displayed
to the user to give more information or context about an error.
* There's not a good accepted terminology for this kind of event, and for
historical reasons 'drawcall' has been the accepted term, even though
that can be quite confusing when a dispatch or a copy is a 'drawcall'.
* This is particularly highlighted by the event browser filters where
$draw() includes draws and dispatches, but $dispatch() only includes
dispatches, it's hard to intuitively understand why $draw() matches all
of these calls.
* As a result we've defined the term 'action' to cover these types of
events in the same way that we defined 'event' in the first place to
mean a single atomic API call.
* This lets the user override the default application font.
* Unfortunately Qt seems to behave inconsistently with font scaling from the
system, so we take the font size initially from QApplication::font() (which
doesn't always pick up the font size) and scale from there. While this might
cause some font scaling to be lost it does mean at least we have a consistent
scale, as otherwise you get some text scaling and others not.
* Supported textures are decoded into standard format of YUVA, displayed
visually with Y in green, U in blue, V in red.
* A new texture display mode 'YUVA decode' has been added which does a default
full-range conversion from YUV to RGB.
* Custom shaders can be used to implement a custom decode matrix.
* Screenshots and icons are updated to latest style
* Many out-dated references and mentions of support updated.
* Documentation added for new windows like resource inspector and
performance counter viewer, as well as new features like saving
bookmarks, resource names.
* Added documentation for Android support as well as OpenGL ES support.