More tools

This release adds new tools and extends the functionality of existing tools.

• New Cylinder for drawing cylinders and tubes.
• New Stairs drawing tool for staircases
• A new Tool Properties docking window that lets you adjust the settings of some tools (just the new Cylinder and Stairs tools for now).
• Adding materials to the material palette is now an undoable operation. You can also now remove individual materials by hovering the mouse over the dock and pressing the X key or pressing the Remove Material button.
• Can now cancel drawing blocks by right clicking.
• Can now delete placed points when drawing a prism by right clicking on the point.
• When the vertex tool is active, you can now Ctrl-click and drag on a block to add a new vertex to your block.
• A new merge blocks command has been added to the menu to merge all selected blocks into one large convex block.
• The drip down menu has been rearranged.
• Duplicate and Delete buttons no longer appear in the toolbar. They are now menu commands.