Nbcommands

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**Improvements**

- [3](https://github.com/vinayak-mehta/nbcommands/issues/3) Add nbless. [4](https://github.com/vinayak-mehta/nbcommands/pull/4) by [Deepu Thomas Philip](https://github.com/deepu-tp).
- Add Sphinx docs!

**Bugfixes**

- [19](https://github.com/vinayak-mehta/nbcommands/issues/19) Fix KeyError when execution count is None. [21](https://github.com/vinayak-mehta/nbcommands/pull/21) by Vinayak Mehta.

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**Bugfixes**

- Fix black source check. Fix: [1d49970](https://github.com/vinayak-mehta/nbcommands/commit/1d4997076df3cd799e28cc9dcb94ef597dadd940).

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**Bugfixes**

- [9](https://github.com/vinayak-mehta/nbcommands/issues/9) nbblack does not ignore jupyter magic cell lines. Fix: [e8aa30b](https://github.com/vinayak-mehta/nbcommands/commit/e8aa30b7bc657d7c921eb633143b2a23a98c6901).

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**Improvements**

- Add nbblack. ✨ 🍰 ✨

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<pre>
HTTPError: 400 Client Error: This filename has already been used, use a different version. See https://pypi.org/help/file-name-reuse for url: https://upload.pypi.org/legacy/
</pre>

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**Bugfixes**

* Fix README links.