v0.2.1 - Shapesheet, Shapesheet, everyone gets a shapesheet!

So in the process of fixing a layout drag bug I seem to have implemented the nested shapesheet calculations. Which would mean shapesheets now fully? work. They also now present in the context menu - a good test target is drawings using Orbus stencils.

Significant ToDos:

• Performance - right now we re-render the entire svg every frame, so dragging (which is almost every drawing action) sucks badly.
• Ribbon - definitely not good yet

What's Changed

• 0.2.1 - everyone gets a shapesheet by @baradhili in #76

Full Changelog: v0.2.0...v0.2.1