notes for installing CADD data files
docs for loading CADD
make CADD optional
msg at load for optional annotations: CADD/GERP
load CADD if asked
make CADD optional
CADD install made optional
msg for GERP/CADD at install
suppress stdout(CADD/GERP msg at load) for unit tests
test modes for cadd
suppress stdout msgs
suppress stdout msgs