decindent options so far

usage: decindent [-h] [-s SPACE] [-c COLON] [-d] [file]

positional arguments:
  file                  the file to indent (defaults to stdin)

optional arguments:
  -h, --help            show this help message and exit
  -s SPACE, --space SPACE
                        the amount of spaces to indent to
  -c COLON, --colon COLON
                        how far to unindent on a colon
  -d, --dryrun          don't change anything