Bump numpy from 1.20.0 to 1.20.1

See merge request !227

Bump more-itertools from 8.6.0 to 8.7.0

See merge request !226

Bump importlib-metadata from 3.4.0 to 3.7.0

See merge request !224

Saqc documentation "pipeline"

See merge request !220

Bumps [numpy](https://github.com/numpy/numpy) from 1.20.0 to 1.20.1.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/master/doc/HOWTO_RELEASE.rst.txt)
- [Commits](https://github.com/numpy/numpy/compare/v1.20.0...v1.20.1)

Bumps [more-itertools](https://github.com/more-itertools/more-itertools) from 8.6.0 to 8.7.0.
- [Release notes](https://github.com/more-itertools/more-itertools/releases)
- [Commits](https://github.com/more-itertools/more-itertools/compare/v8.6.0...v8.7.0)

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 3.4.0 to 3.7.0.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/CHANGES.rst)
- [Commits](https://github.com/python/importlib_metadata/compare/v3.4.0...v3.7.0)

Flags

See merge request !218

added simple __repr__ and __str__.