Probably Final Version

This is a major update that includes some very nice features.  

The main improvements are with the Give Up and Hint features.  I mastered writing Python generators, which allows the program to work in the background calculating while remaining responsive to the user as well as to be able to search for just one more solution.  

Give Up now will calculate and display all possible solutions.  This is useful because the first one it finds may not be the most obvious one form a human standpoint.  It's also instructive to see how many different solutions there are.  If there is more than one solution, you can swipe left (and right) to view them one at a time.  If there are many, it might take a bit to calculate them all, but the program remains responsive to swipes and button presses while it shows how many it's counted so far.  

The Hint feature has more human-readable hints.  Previously, hints would sometimes take a bit to calculate, so the word Calculating... would appear while this happened.  Now, the hints are generated much faster, but furthermore, the information appears line-by-line as it is calculated, in the order that you would want to know it: (1) how many steps back, (2) how many division moves, (3) how many addition moves, (4) how many subtraction moves, (5) lead to one solution or multiple, (6) what is the bonus after the hint.

I also went through and wordsmithed the instructions some more.  I tried to cover the things that people wonder about as they go through it and also to edit down some of the more wordy parts.  

Finally, this now includes a version that should work on older Linux systems.  If that applies to you, download the file ZenBubbles_glibc35.  You can rename it on your own system.  

Those of you downloading the Android APK file, be warned that it will erase your high scores.  Sorry!  I myself lost a high score of 207 on level 5 simple!

Thanks for being a player of this game!  If any of you have any suggestions, you are welcome to reach out. 

Be zen!

Daniel