* Add CheatEngine; Add support for Gateway cheats; Add Cheat UI
* fix a potential crash on some systems
* fix substr with negative length
* Add Joker to the NonOp comp handling
* Fixup JokerOp
* minor fixup in patchop; add todo for nested loops
* Add comment for PadState member variable in HID
* fix: stol to stoul in parsing cheat file
* fix misplaced parsing of values; fix patchop code
* add missing break
* Make read_func and write_func a template parameter
Ben