fixed bug that left a duplicate column. this is apparently ignored by some ggplot2 versions, but raises an error in the Singularity version

This fixes issue #1022 of Snakemake (https://bitbucket.org/snakemake/snakemake/issues/1022)

Copied functionality to select segmentation from detect_strand_states.py into separate script select_segmentation.py, to be used for simulation.

Added options --whitelist and --min_whitelist_interval_size to fine-tune blacklist by whitelisting known SV sites

made with information from the UCSC TableBrowser