* Update mugatu.designmode.build_brigh_neigh_query to include proper motions, only query on the current version of catalogdb and remove Tycho/Gaia duplicates.
* Add optional argument to FPSDesign for RS_VERSION (needed to be used with new DesignToField schema).
* Make changes to queries to include new DesignToField table.
* Add field_exposure to designs added to targetdb.
* Make obsTime optional argument in mugatu.fspdesign.FPSDesign so it is calculated at LST when not provided.