Feature Request --force -f

[WaylonWalker]

Please add a --force flag to force task to run even if hash has not changed on a task with a @skip:key

$bake install
 + Executing @skip(key=requirements.txt):
 + Skipping install/python.
 + Executing install:
 + Done.

$bake install --force
 + Executing install/python:
  .
  .
  .
 + Executing install:
 + Done.

[kennethreitz]

--dont-skip

[WaylonWalker]

Submitted PR https://github.com/kennethreitz/bake/pull/8