Initial version to demonstrate time series extraction
What's Changed
* packaging, initial code structure and API by jameshawkes in https://github.com/ecmwf/polytope-mars/pull/1
New Contributors
* jameshawkes made their first contribution in https://github.com/ecmwf/polytope-mars/pull/1
**Full Changelog**: https://github.com/ecmwf/polytope-mars/commits/0.0.1