- Added support for Python 3.9.
- Added support for Python 3.10.
- Removed cache headers for all views except 404. Due to that snippets can be
deleted, it's not trivial to have them removed from upstream caches.
- Bump pygments version to 2.11.
- update dependency psycopg2-binary to v2.9.3
- Addresses bug in cleanup_snippets script [#191](https://github.com/DarrenOfficial/dpaste/issues/191)
- Removed docs, since it's moved to [docs.dpaste.org](https://docs.dpaste.org), [darrenofficial/dpaste-docs](https://github.com/darrenofficial/dpaste-docs) and will be updated there.
- Removed changelog from main branched, it's moved to https://docs.dpaste.org/changelog/
Signed-off-by: Darren <git@darrennathanael.com>
