DooG updated to v0.87

Thanks to the feedback recieved in the first 24 hours, I've updated the game with the following changes/fixes:

New Stuff:

• Added the option to change turn speed
• Added a button in level 2 to reset the boxes (in case the player messed up)
• Added a way to climb back up from the river in level 2.

Bug fixes:

• Relocated a prop that was causing players to get stuck
• Fixed a couple of secret codes
• Fixed a minor bug with locked doors
• Fixed a bug that prevented opening URLs