Fix magic with arguments that have a dash

[johnscillieri]

I'd like to be able to support arguments that look like this:

-a --argument-name This is the argument to test

This PR enables dot access as before but converts the name to arguments.argument_name.

[codecov-io]

Codecov Report

Merging #6 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master     #6   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines         490    490           
=====================================
  Hits          490    490

Impacted Files	Coverage Δ
docopt.py	100% <100%> (ø)	⬆️

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[itdaniher]

screaming

sorry - 2019 was a mess, and it legit took me until half through 2021 to get online again. Thanks for the PR! Merged!

[johnscillieri]

oh dang, welcome back! No worries, I'm just glad it's in!!

I may support/submit a few others now as well, thanks for the help!