updates to LRGASP metadata and validation tools

[Mark Diekhans]

Dear LRGASP Participants,

We have updated the LRGASP metadata model and submission tools to make the submission to LRGASP easier, more robust, and more clearly defined. Error check in the validation tools has also improved.

Please see the documentation for details at:

https://lrgasp.github.io/lrgasp-submissions/docs/

Please contact us at lrgasp-sup...@ucsc.edu if there any questions or suggestions.

Mark