v0.4.1

Let's see if this release gets picked up by Zenodo.
I have no idea why the last couple of releases failed to sync with Zenodo...

JSON schema

Now with JSON schema that validates all metadata fields in YAML data.

With my thanks to Dr Jonas Windhager for proposing this improvement.

v0.3.0

Dataset migrated to YAML format.

v0.2.0

With global annual production and market price of the elements (data is quite old, but was easily incorporated).
Looking forward to updating this aspect of the dataset - let me know if you know of better sources!

Zenodo DOI

Nothing new, just created a release to activate Zenodo DOI.