Round calculated label sizes up to prevent strings from not rendering

I'm loading a custom TTF and have an issue where certain strings will not render

I've traced through and can see that the sizes are being calculated and rendered using `NSString drawInRect:` The calculated size is always a float, as expected. When we attempt to render them using  `string drawInRect` it renders blank.

When I apply a `ceil()` to the calculated size's width and height, all string render 100% normal

I can't provide the ttf unfortunately because it's a licensed file, I will search for an open source font

This seems like it might be an issue with `NSStringDrawing`, or possibly even the font. 

thoughts?