UPDATE: Post-launch improvements

Today's update includes the following changes:

• Added the ability to delete the dragged instructions by pressing the delete key or dropping them outside of the program grid.

• Added a rotation button to the solution shifting tool.

• Added support for rotating dragged parts with the scroll wheel.

• Modified histograms to show your old solution scores when they change.

• Modified the icon for the hydrogen shunt instruction to be easier to read.

• Fixed a bug where you could start a new solitaire game while dragging cards.