- Fix pypi failure: specifying that the README is in Markdown format, otherwise pushing to pypi fails, see https://pypi.org/help/#description-content-type and https://github.com/di/markdown-description-example
- Bug fix: the marginal photometry plot was failing when the filter configuration file contained bands not present in the observations, but only computed for the models
- Added option to specify flux units for photometry
- Update README.md