BREAKING CHANGE: on Ubuntu 20.04+, the `texlive-latex-extra` package is needed to generate the PDF output

Bumps [coveralls](https://github.com/coveralls-clients/coveralls-python) from 2.0.0 to 2.2.0.
- [Release notes](https://github.com/coveralls-clients/coveralls-python/releases)
- [Changelog](https://github.com/coveralls-clients/coveralls-python/blob/master/CHANGELOG.md)
- [Commits](https://github.com/coveralls-clients/coveralls-python/compare/2.0.0...2.2.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.21 to 1.31.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.21...1.31)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.5.2 to 2.5.3.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](https://github.com/PyCQA/pylint/compare/pylint-2.5.2...pylint-2.5.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [codecov](https://github.com/codecov/codecov-python) from 2.1.0 to 2.1.3.
- [Release notes](https://github.com/codecov/codecov-python/releases)
- [Changelog](https://github.com/codecov/codecov-python/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-python/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.20 to 1.21.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [codecov](https://github.com/codecov/codecov-python) from 2.0.22 to 2.1.0.
- [Release notes](https://github.com/codecov/codecov-python/releases)
- [Changelog](https://github.com/codecov/codecov-python/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-python/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [numpy](https://github.com/numpy/numpy) from 1.18.2 to 1.18.4.
- [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/v1.18.2...v1.18.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.4.4 to 2.5.2.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](https://github.com/PyCQA/pylint/compare/pylint-2.4.4...pylint-2.5.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.18 to 1.20.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.18...1.20)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.17 to 1.18.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.17...1.18)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [codecov](https://github.com/codecov/codecov-python) from 2.0.16 to 2.0.22.
- [Release notes](https://github.com/codecov/codecov-python/releases)
- [Changelog](https://github.com/codecov/codecov-python/blob/v2.0.22/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-python/compare/v2.0.16...v2.0.22)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [tabulate](https://github.com/astanin/python-tabulate) from 0.8.6 to 0.8.7.
- [Release notes](https://github.com/astanin/python-tabulate/releases)
- [Changelog](https://github.com/astanin/python-tabulate/blob/master/CHANGELOG)
- [Commits](https://github.com/astanin/python-tabulate/compare/v0.8.6...v0.8.7)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [numpy](https://github.com/numpy/numpy) from 1.18.1 to 1.18.2.
- [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/v1.18.1...v1.18.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [codecov](https://github.com/codecov/codecov-python) from 2.0.15 to 2.0.16.
- [Release notes](https://github.com/codecov/codecov-python/releases)
- [Changelog](https://github.com/codecov/codecov-python/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-python/compare/v2.0.15...v2.0.16)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

You can now use the `--format=pdf` argument to save the data computed by
Kosmorro to a PDF file. The new `--output` argument must be given with
the export file path.

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.16 to 1.17.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.16...1.17)

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Colors can be disabled with the new `--no-colors` argument.

Bumps [numpy](https://github.com/numpy/numpy) from 1.18.0 to 1.18.1.
- [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/v1.18.0...v1.18.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [numpy](https://github.com/numpy/numpy) from 1.17.4 to 1.18.0.
- [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/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.15 to 1.16.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.15...1.16)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [tabulate](https://github.com/astanin/python-tabulate) from 0.8.5 to 0.8.6.
- [Release notes](https://github.com/astanin/python-tabulate/releases)
- [Changelog](https://github.com/astanin/python-tabulate/blob/master/CHANGELOG)
- [Commits](https://github.com/astanin/python-tabulate/compare/v0.8.5...v0.8.6)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.14 to 1.15.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.14...1.15)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.4.3 to 2.4.4.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](https://github.com/PyCQA/pylint/compare/pylint-2.4.3...pylint-2.4.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [numpy](https://github.com/numpy/numpy) from 1.17.3 to 1.17.4.
- [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/v1.17.3...v1.17.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.13 to 1.14.
- [Release notes](https://github.com/brandon-rhodes/python-skyfield/releases)
- [Changelog](https://github.com/skyfielders/python-skyfield/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/brandon-rhodes/python-skyfield/compare/1.13...1.14)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bumps [pylintfileheader](https://github.com/HaaLeo/pylint-file-header) from 0.0.2 to 0.1.0.
- [Release notes](https://github.com/HaaLeo/pylint-file-header/releases)
- [Changelog](https://github.com/HaaLeo/pylint-file-header/blob/master/CHANGELOG.md)
- [Commits](https://github.com/HaaLeo/pylint-file-header/compare/v0.0.2...v0.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>