v1.2.1

Fixed ltex not being stored properly in image.

v1.2

Added spell check support, and include jupyterlab in the base image.

v.1.1.2

Fixed docker image for previous release.

v1.1

Added Black and pylint to base_requirements.txt

v1.0 - 3.8 python docker image

Release to peg the current version of the notebook docker image. The release version should be updated if an update to the image will retrospectively break previously forked versions of the notebook template.