parseDefaults: Now we can find the last options: string and ignore all text before it
parseOption: Now we can use both tabs and spaces to separate options from their descriptions. I used to stuck for a long time just because I used tabs (instead of spaces) to align my descriptions.
Coverage increased (+0.1%) to 88.394% when pulling 3fc2b3db750dd26e1faa5fada8ef35c76f55550c on daichao1997:master into ee0de3bc6815ee19d4a46c7eb90f829db0e014b1 on docopt:master.
options:
string and ignore all text before it