Piglot

Changelog

- Assorted bug fixes (8)
- Fix missing variance for GP plots
- Fix bad initialisation of quantity classes
- Fix qMC acquisition functions for scalar objectives
- Fix links and pictures in README
- Fix typos in the README
- Add CRATE interface, example and documentation (10)
- Add more Unit and CI tests (9)
- Add Abaqus interface (11)
- Add support for ReadTheDocs (12 + 13)
- Add support for codecov (14)
- Add CONTRIBUTING.md and list of papers (15)

- Remove some extra spaces in `tests_assorted.py`
- Update package description
- Fix README logo and links
- Add release action for automatic uploads to PyPI

First public release of `piglot`, still in an experimental state.