Rocrate

This is a bugfix release of RO-Crate-py 0.2

[](https://doi.org/10.5281/zenodo.4269684)

Changelog:
* [Handling of datetimes fixed](https://github.com/ResearchObject/ro-crate-py/pull/37)

This release adds support for [RO-Crate spec 1.1](https://www.researchobject.org/ro-crate/1.1).

Other changes include:
* better HTML rendering
* an increase in test coverage
* bug fixes

Should not deploy

Initial release