1.3.0b on beta branch! - Minor fixes, smoother OBS capture, new mask — Keysight Steam update #396085

Sneaking this one in just before 1.3 goes live on the 24th! The most important thing in this update is that Unreal Engine's "smoothing" is now disabled. For some context: something that I see a lot on my own streams is that OBS sometimes just completely drops the ball on smooth capture even though Keysight is apparently v-sync locked and running at 60fps. Occasionally, the stream-side Keysight frame pacing will completely tank for around 5-20 seconds before recovering and being silky smooth. After poking around and doing some testing, it seems like disabling Unreal Engine's frame smoothing drastically affects the duration of this "wobble" period, and with smoothing disabled the stream-side pacing recovers from a skipped frame pretty much immediately. Long story short: smoother OBS capture! Probably. Anyway, here's the full changelog for other stuff! Changelog --- SMALL ADDITIONS --- Adde...