Expand exclusion rules
Expand exclusion rules

We should kick out sequences less than 1k in length as well as expand
the taxids we exclude. We still are getting too many bad sequences and
need to exclude them.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline