Partially added saving and loading of settings

-Doesn't work yet, but it's there
Changed when the UFO's block drop sound plays

-Now instead of both sounds playing when the UFO is shot, one is played when the block it drops hits
Shaded the colorblind symbols

-They look nicer, now
Moved HubObject.make_text to the module level

-Also fixed the timer in time attack mode
Added a sound effect to pausing

-It pauses all music and sound effects, too
-Added the new sound effect
High score data is now saved to the user's home directory

-Or, on Windows, the user's AppData directory
-Removed usage of the platform module, replaced with sys.platform
Changed some global lists to tuples

-Tuples take up less memory, and work the same if we're not changing the elements
Added the BitRock Install Builder XML

-This is what I'm using to package Invasodado