fail to  parse "require_ssl": "False" in config file

hi,
i think the problem is in resolve_option function the line `return value if value is None else cast_as(value)` do something like this bool("False") which is True, according to https://stackoverflow.com/questions/715417/converting-from-a-string-to-boolean-in-python?page=1&tab=scoredesc#tab-top

i hope this can help.

great work with this tool.

best regards 
mariano 