* Output manual pages should be built reproducibly, no matter the current
size of the terminal.
* Methods build_manpages, get_build_py_cmd, get_install_cmd are now
provided in top-level module.
* More portable opening and parsing given by python file name.
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New in version 2
* Split out options by generic argument groups, not only predefined
"positional arguments", "options", and Subparsers.
* RPM spec file updated to comply with the recent (Fedora 35+) guidelines.
* Drop python3-six requirement.
* Properly highligh all option argument METAVARs.
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