[v 0.3.0] Pre-release tasks

[SimonMolinsky]

• [x] Update tutorials,
• [x] Update documentation,
• [ ] TODOs to Issues,
• [x] Update docstrings with authors information
• [x] Check setup scripts
• [x] Move https://github.com/DataverseLabs/pyinterpolate/blob/dev/pyinterpolate/misc/download_air_data.py to v0.3
• [x] add requests to requirements
• [x] test setup and code with paper examples
• [ ] describe data structures

[SimonMolinsky]

I have updated each tutorial, now I'll update documentation with authors and move the function https://github.com/DataverseLabs/pyinterpolate/blob/dev/pyinterpolate/misc/download_air_data.py to the v0.3

[SimonMolinsky]

Ok, I have to make one last step - update README and documentation - and I will publish the package. TODOs to Issues will be done after publication :)

[SimonMolinsky]

README is updated, and documentation in the first form is available; but I need to do one more thing: describe data structures. Then I can publish the new version of a package!

[SimonMolinsky]

I'll close this issue and create two new ones from it.