Hdmf

- Fix incorrect dtype precision upgrade for VectorIndex (631)

Minor improvements
- Improve Sphinx documentation. rly (627)

Bug fix
- Fix error with representing an indexed table column when the `VectorIndex` dtype precision is upgraded more
than one step, e.g., uint8 to uint32. This can happen when, for example, a single `add_row` call is used to
add more than 65535 elements to an empty indexed column. rly (631)

Bug fix
- Fix generation of extension classes that extend `MultiContainerInterface` and use a custom _fieldsname. rly (626)

Bug fix
- Raise minimum version of pandas from 0.23 to 1.0.5 to be compatible with numpy 1.20. rly (618)
- Update documentation and update structure of requirements files. rly (619)

Bug fix
- Fix incompatibility issue with downstream github-release tool used to deploy releases to GitHub. rly (614)

Bug fix
- Fix incompatibility issue with downstream github-release tool used to deploy releases to GitHub. rly (607)
- Fix issue where dependencies of included types were not being loaded in namespaces / extensions. rly (613)

Bug fix
- Fix issue where tables with multi-indexed columns defined using `__columns__` did not have attributes properly set.
rly (605)