Welleng

It's now possible to tune the tolerance params when exporting a survey.


s_minimal = we.exchange.csv.export_csv(
survey,
None,
rtol=0.05, default value is 0.1
atol=0.05 default value is 0.1
)

If the `DataFrame` or `.csv` file looks like it's missing some sections then try reducing the `rtol` and `atol` params. This will generate more control points for a given survey.

- Changed yaml load from full to safe - colab not working with full.

- Added `package_data` to `setup.py`

- Fixed spelling of MANIFEST
- Fettle with path in `MANIFEST.in`
- Make the `FILENAME` OS agnostic in `errors.iscwsa_mwd`

- Added a `MANIFEST.in` file to include the `error_codes.yaml` file.
- Prepare `errors` for adding new tool codes.

Updated the `connector.interpolate_survey` function to interpolate the covariance matrices for the interpolated survey stations - previously these were being calculated as if they were real survey points.