SICD 1.2.0 support

[kjurka]

I have some old SICD 1.2.0 images that sarkit can't read. Is there a way to map this to use the 1.2.1 schema or otherwise be able to load this imagery?

[johnstob]

Thank you for the input. We will plan to support v1.2.0 SICD in the next release.