Update: More levels and a few tweaks

More levels, plus a few small tweaks and tutorial improvements.

Bugs fixed: 2

New Features

• Two more levels! A final Octavius level, and the first level taking place in the Hexahedra Inc factory (though the narrative for this isn't sorted yet).
  

Other Changes

• Moved An Unexpected Visit to after Colour Sorting.
  
• Corporate Transparency now explains how the Recycler works.
  
• A Sea View now requires you to ship 10 cubes, not 5, so that it's harder to complete without being properly on top of teleporter timings.
  
• Megalaser Mishap now has narrative.
  

Bugfixes

• The Demo Complete screen now appears again once you complete the final demo puzzle for the first time.