Initial commit
Added existing files.
Added support for 64 bit numbers.
We need negative numbers as well.
Added interactive mode.
This is version 0.1.
Added file resources
* Added executable icon
* Added executable information

This is version 0.1.1.
Only print the modular inverse if it actually exists.
Removed unneeded cast.
Swap x and y if x < y.
This fixes the "swapped s and t" issue.
Code-style consistency is always a good thing.
Fixed modular inverse printing.
Fixed incorrect output caused by number swapping.