Updated `genome` tab completion.
Bugfix for the case where we have only one sample name
Merge branch 'fpvcf' into gb_master
Make tumor-only or normal-only models OK

Previously, this tool expected both an experimental_sample and a
control_sample, but sometimes we have only one or the other or neither,
and this is OK here.
Add version 2.3.6 of VarScan
Updated `genome` tab completion.
Add options to ignore ensembl annotations and to not filter on regulomedb
only assign a property explicity if it is defined
Find regulatory annotations correctly
If you exclude ensembl annotations, exclude them from the ROI as well
Make output optional
Merge branch 'copy' into gb_master