Investigate possible size regressions, likely with vs2019

[yupferris]

In #57 I noticed that Reverence is about 1kb larger with squishy in recent builds compared to compressing the original uncompressed executable. It might just be bloat from the latest VS (in which case perhaps we can find some new option tweaks to try and improve it), or it might be a mistake we've made somewhere (and if that's a regression, we should identify and fix it).