Add notebook support

[piotrwieckiewicz]

Adds Jupyter notebooks support for for better visibility. Now cells are more readable and current cell is outlined.

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[jdinhify]

@piotrwieckiewicz Thank you so much, it looks great

Would you like to add yourself into the contributor list in package.json & README.md?

[piotrwieckiewicz]

@jdinhify Done

[jdinhify]

:tada: This PR is included in version 1.8.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: