- For annotated methods with arguments, change default arity
to zero with booleans and one everything else regardless
if @ShellOption is defined or not.
- OptionArity.ZERO_OR_ONE had wrong upperbound value, change
from MAX to 1.
- These modification should take us a bit closer to old
shell functionality and what ShellOption documents for arity.
- For old functionality I'm referring to method
`add(int a, int b)` and/or having @ShellOption and/or without
arity setting.
- Fixes#446
5ba8e185bc