Quality of Life Update!

This update was mainly a quick bug fix update because some of my friends are still playing the game.  It doesn't add any new levels, but it does make solutions more obvious and fix (most) things that previously caused frustration.

•   The final level reduces backtracking by including a sign showing what you need to solve
• Bombs have a new way of detonation to reduce anxiety: they reset their timer when you pick them up, and only count down when you drop them
• Picking up or dropping objects is dramatically improved. 
  
  • They no longer edge away from you sometimes
  • The drop direction no longer relies on "momentum."  Now, any time you make an input it should update to that direction, though sometimes you can still get it to land on your head

• The sliding cubes introduction now spawns them on a slope to immediately make their function clearer
  • They also have a trail to help illustrate their properties
  • The level can no longer be cheesed, the platform has been moved to come in from the side