What's Changed
* GEOPY-497: Implement SimPEG Group for storing inversion results
* GEOPY-314 - Update Drillhole entity for GA 4.0. Allow opening a Workspace as context manager.
* GEOPY-540: Allow opening workspace without a Root group
* GEOPY-539: Allow loading a workspace from bytes
* GEOPY-574: Make open return self. Augment unit test
Bug fixes
* GEOPY-511: do not always open geoH5 workspaces for writing from Python API
* GEOPY-514: Fix AtLeastOneValidation on natural source-inversion
* GEOPY-508, GEOPY-533: Refactor for read-only mode
* GEOPY-542: Root written without reference to children after creation
* GEOPY-543: Always import annotations from future
* GEOPY-568: Cannot select mesh from ui.json dropdown
**Full Changelog**: https://github.com/MiraGeoscience/geoh5py/compare/v0.2.0...v0.3.0