1.0.0-beta2 support

[jisantuc]

The only change in 1.0.0-beta2 that we need to worry about is support for null geometries. The specific case to allow them that's mentioned in best practices is "in progress" satellite data. GeoTrellis doesn't decode null as a geometry, though maybe it should? I'd strongly prefer to pretend this never happened, continue to require a geometry and bbox, (you can provide Null Island and update with the transactions extension in Franklin if you really need this or fill in with your existing metadata, if that's how it's supposed to work, for static catalog). At least that's my preference over "both required or both null".