Grease Pencil Shear Tool Todo

• The tool should execute on release, so when you click and drag, it stops. Currently you need to click an extra time, which is inconsistent and annoying.
• Add Tool Setting to switch between horizontal and vertical shearing
• Shear should have a manipulator to shear in any direction, the orientation on which is controlled by the Orientation setting, just like the Transform manipulators. Dragging any of the handles shears in that direction.