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

BREAKING CHANGE: some methodes in Event and MoonPhase have been dropped
in favor of `enum.Enum`'s `name` and `value` properties.

Bumps [skyfield](https://github.com/brandon-rhodes/python-skyfield) from 1.31 to 1.33.
- [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/1.31...1.33)

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

chore(deps-dev): bump coveralls from 2.0.0 to 2.2.0

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>

Update Dependabot config file

chore(deps): bump skyfield from 1.21 to 1.31

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>

Create codeql-analysis.yml

chore(deps-dev): bump pylint from 2.5.2 to 2.5.3

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>

ci: release locales through a workflow

Handle out of range date error

Replace Codecov by Coveralls

Avoid returning ephemerides for yesterday or tomorrow

chore(deps-dev): bump codecov from 2.1.0 to 2.1.3

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>

chore(deps): bump skyfield from 1.20 to 1.21

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>

chore(deps-dev): bump codecov from 2.0.22 to 2.1.0

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>

chore(deps): bump numpy from 1.18.2 to 1.18.4

chore(deps-dev): bump pylint from 2.4.4 to 2.5.2

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>

Add manpage to explain terms

Add support for translation to the PDF graph

Split Python workflow to enhance DX

Display a graph in the PDF output for the ephemerides