The core module contains schema that must be implemented by every
asdf library.
.. asdf-autoschemas:: core/asdf-1.1.0 core/complex-1.0.0 core/extension_metadata-1.0.0 core/ndarray-1.1.0 core/constant-1.0.0 core/software-1.0.0 core/history_entry-1.0.0 core/integer-1.1.0 core/externalarray-1.0.0