Ensuring even width and heights when scaling 200%

[tommypreger]

When resizing text layers to 200% sometimes the rendered files get uneven widths and heights (e.g. 99*45 instead of 100x46), which makes them blurry when scaled down by two and watched on a non-retina display. This feels like a bug to me.

For the time being I have added two lines of code to renderer.js in the fnHandlePixmap function:

if(pixmap.width % 2) padding.right = 1;
if(pixmap.height % 2) padding.bottom = 1;

This fixes the problem for me, but I'd rather not have to go in and mess with the source...