Added a UUIDField.
Added a UUIDField.

promptworks/schematics,kstrauser/schematics,kaiix/schematics,ee08b397/schematics,openprocurement/schematics,eatfirst/schematics,not-napoleon/schematics,nKey/schematics,kstrauser/schematics,NerdWallet/schematics,promptworks/schematics,mlyundin/schematics,not-napoleon/schematics,ee08b397/schematics