Draw rotated text

[corranwebster]

This would be a very nice feature to have, ideally allowing at any angle, but at a minimum the ability to render In orthogonal directions would be very useful for plots when labelling axes.

Issues for non-orthogonal angles include:

• speed: in a naive implementation it's a lot of floating point ops
• lack of antialiasing: it's not going to look good for small font sizes, and even large fonts may not look good
• memory: may require an intermediate buffer or caching