1.6.3f hotfix — Keysight Steam update #396065

Greetings! More of a "lukewarm" fix here than a "hotfix", but as they say: better late than never. 8k resolution rendering is now actually functional (for better or worse). I made a very silly mistake that stopped resolutions larger than 4,096 from being allowed in the Y axis in the last patch! I still strongly recommend that nobody use >4k resolutions for producing content, it's just far too much overhead and liable to make Keysight crash on lower-spec systems, but I don't want to actually enforce such a restriction in code. Also fixed: Channel colour mode breaking on time-offset Pulses and Particles. This one actually slipped through since version 1.6.0! Finally, I added a debug console command to switch Keysight to output a BMP image sequence rather than an actual video when performing a render-to-video operation. Similar to 8k rendering, I strongly recommend ignoring this feature; it...