Welleng

Bump version.

The `clearance` module has been jigged around a little - since there's been some name changes this might break some legacy code so, so it's been given a major version number bump.

A few other bug fixes included. Updated documentation being worked on...

What's Changed
* Add a .nojekyll file for docs builds and bump version by jonnymaserati in https://github.com/jonnymaserati/welleng/pull/138
* Getting ready for documentation by jonnymaserati in https://github.com/jonnymaserati/welleng/pull/139
* Fixed and refactored a little the clearance module by jonnymaserati in https://github.com/jonnymaserati/welleng/pull/148


**Full Changelog**: https://github.com/jonnymaserati/welleng/compare/v0.5.1...v0.7.0

Minor speed improvements when creating meshes with `WellMesh`.

Added `clearance.ISCWSA` method `get_sf_mins` for calculating the minimum Separation Factor (SF) between reference well survey stations where a SF minima is determined versus the reference well.

Released as a major update as the SF attribute data format has changed, so this version may not work with code developed for v0.4.x.

- Added the Survey.minimum_curvature() method for calculating a realistic amount of tortuosity in a well path as described in this [post](https://jonnymaserati.github.io/2022/06/19/modified-tortuosity-index-survey-frequency.html).
- Updated the Survey.modified_tortuosity_index() method to pre-process the Survey using the three step method and recommended defaults described in this [post](https://jonnymaserati.github.io/2022/06/19/modified-tortuosity-index-survey-frequency.html).
- Added a panel plot: Survey.figure(type='panel').
- Updated README.MD.
- Minor updates.

Minor update:
- Fix 120 - was treating `b_total` as an angle in `survey`.
- Handle `numpy.ndarray` in utils when converting dls to radius and visa versa.
- Other minor updates.