- Update to 0.20.0:
* Fixed infinite loop when removing macros with `%` in the name. (#244)
* Added a possibility to undefine system macros by setting a macro value
to `None` in the `macros` argument of the `Specfile` constructor. (#244)
* Fixed a bug in processing options of `%prep` macros. For instance, when
a quoted string appeared inside an expression expansion, it could lead
to improper parsing, rendering the spec file invalid after accessing
the options. (#253)
* Parsing has been optimized so that even spec files with hundreds of
thousands of lines can be processed in reasonable time. (#240)
- Drop setuptools_scm_git_archive BuildRequires.
- Don't need to skip Python 3.8.