Small update:
There was a spelling error in the credits (I probably accidentally typed on the Switch when I meant to type on the computer)
Since I updated the code anyway, added an option: shuffle intensity (slider value: 0 = start with sorted deck; 1040 = start with intensely shuffled deck).
If you want to use a seed to play the same deck of cards, you need to set the shuffle intensity value to the same value as well to end up with the same deck of cards. To replay seeds from before this update, you need to put the slider value to the max 1040 shuffle intensity (hence the weird max value, for seed backwards compatibility).
EDIT (9 july 2020):
I shared a new version with a few minor updates:
Show version number on screen in menu (now "v1.0.1")
Show configured shuffle intensity when the seed is shown
Draw size is now 1 by default (in stead of 3), and can also be set to 2.