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The v0.4 release is functionally complete, and is only missing some
User's Guide content. Barring reporting of major bugs, v0.4rc1 will
become v0.4 once this content is drafted.
Classes/modules with no currently planned additional functionality:
* OpanXYZ
* OrcaEngrad
* OrcaHess
* utils.inertia
Classes/modules with some functionality, but planned augmentation/alteration:
* OrcaOutput
* utils.execute
Modules with stable functionality, but which will likely have future additions:
* const
* error
* utils
* utils.decorate
* utils.vector
Non-functional modules, with future implementation planned:
* utils.symm
* vpt2