add docs, move some data fetching to more appropriate class
remove old XP memecrypto support handling, was previously removed due to
net standard/core split
refactor memecrypto to handle multiple save sizes (USUM won't be the
same size save file); placeholder -1 for USUM size
I also added comments where appropriate, because it took far too long to understand what was going on when reviewing the commit that fixed the original bug.
Closes#1137
allows loading of tab separated value text file "savpaths.txt" which can
also be used to 'favorite' locations (ie, the program checks for
duplicate paths and only adds the first).
folder availability checked on form creation
shortcut: press ctrl-F on main window
Thanks @sora10pls !
