is your whitespace off here? are you using tabs instead of spaces?

No, I'm using spaces instead of tabs.

The whitespace changes (automatically done by the Save command in TextMate setup because of a whitespace bundle I have installed) are either a) removing trailing whitespace, or b) converting tabs to spaces.

Ah, interesting about the tabs/spaces. I'll run through our files once more and check for any spacing issues—we should be using soft-tabs with 2-spaces. Thinking about this now, we should add it to the docs for contributors.

@peburrows, can you run the make to get the compiled CSS as part of this pull?

Actually, making this part of the next release. Got it accounted for in the 1.2-wip branch we have right now.

Thanks!