usage: gftools-update-version [-h] --old_version OLD_VERSION --new_version NEW_VERSION
                              fonts [fonts ...]

Update a collection of fonts version number to a new version number.

e.g:
gftools update-version [fonts] 2.300 2.301

positional arguments:
  fonts                 Fonts in OpenType (TTF/OTF) format

options:
  -h, --help            show this help message and exit
  --old_version OLD_VERSION
                        Old version number
  --new_version NEW_VERSION
                        New Version number