Font size is now constant 14.0f (this value comes from fluent theme resources, there is also a bug which blocks using the resource: it is double, but font size is float, probably a bug in Avalonia).

As noted in #121 (comment), this is also a problem for Platform Uno. The solution would be to change all float properties to double, but that change will be done in #121.

Also this value (14) would be great as the default across all platforms. The current default, 50, is definitely too large. I'll add a commit that implements this change.