* Refactor tests to use a text-based standard output. (#1318)
* Implement new style `--help` (#1316)
* Implement man page generation (#1317)
* Implement rich progress bars. (#1324)
* Man page deployment & isolation. (#1325)
* Remove all unsorted usages in the CLI docs
* Implement isolated mode for man page generation
* Add a CI job for autogenerated files
* Distribute man pages through PyPI
* Pin the date for man pages. (#1326)
* Hide suppressed arguments from --help/man pages (#1329)
* Change download spinner to line (#1328)
* Regenerate autogenerated files when pushed against to master. (#1339)
* Highlight options (#1340)
* Additional man page enhancements (#1341)
* Group options by the parent category & highlight -o/--o
* Display (and underline) the METAVAR on man pages.
* Make help message processing more robust (#1342)
* Inherit `help` from `short_help`
* Don't mirror short_help directly.
* Fixup the serialization
* Use `pager` and `man` on `--manual` when applicable (#1343)
* Run `man $program` on --manual
* Page the output of `--manual` for systems that lack man pages
* Improvements over progress bars (separate bar, status line, etc.) (#1346)
* Redesign the --help layout.
* Make our usage of rich compatible with 9.10.0
* Add `HTTPIE_NO_MAN_PAGES`
* Make tests also patch os.get_terminal_size
* Generate CLI spec from HTTPie & Man Page Hook (#1354)
* Generate CLI spec from HTTPie & add man page hook
* Use the full command space for the option headers
* Improve startup time with lazy loading some args
* add some tests
* Add changelog entry
* Update CHANGELOG.md
Co-authored-by: Jakub Roztocil <jakub@roztocil.co>
