Fixed casa imports

Some imports for visualization_casa and scatter_casa were previously broken.

Building again.

v0.0.4

removing libgfortran from build-publish.

Separation of casa dependencies and lambda as base spatial frequency unit.

v0.0.3

update badge on readme.

Tutorial complete

Minor updates to visread code. Changing cube.weights -> cube.weight.

Added a quickstart tutorial.

Stable Release

Stable release with code, tests, and documentation.

another test release

v0.0.1.dev4

bumping version.

Candidate test release

Setting up Zenodo tagging.