Syncing

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Feat
~~~~
- (bin): Update publish script.

- (doc): Add Read the Docs configuration file.

- (test): Add github actions.


Fix
~~~
- (doc): Correct issues links.

- (read): Correct bug due to pandas version.

- (doc): Remove broken badge.

- (setup): Correct setup config file.

-------------------

Feat
~~~~
- (core): Update build scripts.

- (doc): Update Copyright.


Fix
~~~
- (core): Correct bug due to schedula version.

-------------------

Feat
~~~~
- (core): Add python 3.9.


Fix
~~~
- (cli): Correct default options.

-------------------

Fix
~~~
- (rw): Use `openpyxl` to read `xlsx` files.

- (doc): Update copyrights.

-------------------

Feat
~~~~
- (core): Update build script.

- (test): Add test cases for the new option commands.

- (setup): Update schedula requirement.

- (cli): Add option to execute only the re-sampling.

- (doc): Add code of conduct.

- (github): Add issues and pull requests templates.

- (core): Add support for python 3.8 and drop python 3.5 and drop
`appveyor`.

- (cli): Add option to filter out the `data-names` to work.


Fix
~~~
- (setup) :gh:`5`: Drop setuptools dependency from `setup.py`

- (cli): Correct logging level.

- (travis): Remove graphviz installation in travis.

- (travis): Correct travis test execution.

- (doc): Correct PEP8.

- (rtd): Add missing requirements.

- (rtd): Correct importing issue.

- (doc): Correct contrib.

- (setup): Add missing test requirements.

- (setup): Remove `nose` from `setup_requires`.

- (build): Improve cleaning.

-------------------

Feat
~~~~
- (syncing): Remove empty columns.