* This includes an enum for unsupported (but recognised) image formats
instead of just a generic 'file corrupted' or misleading 'API
unsupported' error.
* In a couple of places I had to resort to if(IsHighContrast) but mostly
this is just using system brushes consistently or not assuming black
text.
* The default DockPanel theme doesn't work well, so make a minimal high-
contrast theme for it and assign it everywhere.
* The pipeline flow was using fixed colours, use system brushes for the
different elements and switch based on high-contrast to ensure active
and inactive stages are visible (using ActiveCaption looks bad on
normal themes because it's a big block of colour).
* For some reason the flat toolstrip renderer doesn't handle white-on-
black themes, but the system one does. It's a little clunkier but it
shows up correctly without writing tons of custom painting code.
* Range histogram uses a properly contrasting colour for the border.
* Treelist views use a better system colour for selected rows when
inactive and hovered rows (when high contrast).
* Mesh view grids have a system background instead of white
* Various things (pipeline state, mesh viewe) set text colour when
colourising backgrounds of things instead of assuming black.
* This is primarily for vulkan, which supports either xlib or xcb (and
not necessarily both). GL still only supports xlib, windows and
android only support one system regardless of API.
* This should also support xlib again for fetching keystates etc.
* Previously it was treating maxfigures as the required length of the
fractional part, so you'd get a lot of pointless 0s. it should be the
number of significant figures, so we pretty much reuse the non-exp
formatter.
* In-application API is bumped to 1.1.0 as a new function pointer is
added to the end of the structure.
* This comes with some caveats - capturing a frame is fairly heavy
weight, so capturing a frame might throw off timing-related bugs you
are trying to capture in subsequent frames. If you know your bug is
every other frame though, capturing two can be a quick way to ensure
you get it.