Script versions used for analyses in manuscript.

This release contains scripts as used for the analyses in the manuscript. In the meantime, we have noticed (thanks to Guoyun Xie from BGI) that extractReadStartsFromBAM_Region_WPS.py and extractReadStartsFromBAM2Wig.py produce different WPS values at the interval edges. extractReadStartsFromBAM_Region_WPS.py misses alignment ends outside of the requested interval, but required for WPS calculation.