Pre-refresh archive

On January 9th, dea-notebooks was upgraded to a new directory structure and a new and improved set of Jupyter notebooks and scripts. This release preserves the history of the repository prior to this change. Please note that notebooks and code in this release (and earlier) are no longer maintained or supported.

Also archived in the master_archive branch: https://github.com/GeoscienceAustralia/dea-notebooks/tree/master_archive