Codecov.io, remove catalog geometry, and other minor 0.3.x release tasks

[espg]

Small tasks

• Binder button (in jupyter book, and at repo readme)
• Line length tracking (CI/CD function and badge)
• Move map.html to S3
• Org name
• Codecov.io integration
• Remove catalog-level geometry
• OPS API update - [WIP] Update to support new OPS metadata API #27
• Clean up issues

Not targeting 0.3.x:

Upload (to S3) and document polar map (jupyter, markdown call) See #23