The new UI is finally here! Out with plain black boxes for buttons made by me, in with gorgeous new artwork made by a UI artist who dazzles me with arcane knowledge such as "which way round to hold a pen".

Bugs Squashed: 9

New features:

• The new UI is here! The interface has been totally overhauled, with both much better functionality and artwork. There's no point in me describing it all here - go and take a look for yourself!
  
• This has also meant updating the tutorial to account for the new interface, but there are also some extra sections covering more advanced controls.
  

Other changes:

• Improved rendering efficiency of cubes.
  
• Improved load times.
  

Bugfixes:

• Decorations no longer sometimes disappear from rotatable cube visualizations.
  
• It's now possible to back out of renaming a solution.
  
• It's now much easier to see which material a black panel is made of.
  
• If you drag a fresh command from the supply and replace a command that's part of the current selection, dragging the selection now correctly drags the replacement command.
  
• Fixed incorrect undo history descriptions for changes to reverse (right to left) tracks.
  
• Dragging copies of selected commands and then undoing now correctly reselects the previously selected track.
  
• It's now possible to wind back to the start of the most recent step in the timeline without having to first go back further and then wind forwards.
  
• Solutions no longer claim to run in 0 steps in some circumstances.
  
• Improved sizing of tooltips.