Needs a way to restrict angles

[waldyrious]

The Shift or Control keys should restrict angles (e.g. using the line tool, or the rotate tool) to increments of 15º (or 30º plus the 45º multiples)

[artursapek]

:+1:. This behavior exists for dragging with the cursor tool (hold down shift while dragging a shape), but not for any of the drawing tools. The pen tool also used to support it, but it seems I removed it at some point.