Font size binding

[xabre]

Font size does not work properly for all platforms:

• Android

• iOS

• UWP

• Mac

[alwydl]

Any hint on how to customize the size font for now?
I tried in custom renderer for Android, by finding the LinearLayout, finding all TextView in it and SetTextSize inside the DispatchDraw method. But does not work very well (it reduces only for those texts that wouldn't fit in the tab, for those that fit it kept the original size).

[LeoJHarris]

@xabre This would be a great feature! While the default textsize is readable we'd love top be able to bump it up abit and make it even more readable.