be explicit that the string is empty rather than possibly missing
disallow encrypted export for BK4 (they're not encrypted), removes type
check
simplify replaceall in showdownset (don't call ReplaceAll 4x, just get
valid chars and rebuild)
simplify get ribbon sprite name (precompute ToLower and appended values
Make extrabytes a pkm property (don't mutate array pls)
reconfigure startup loading to only initialize after initial load of sav
& pkm (using blanks if not provided)
