fix problem with pseudocounts
increased version to reflect the change
upgrade to recent deepTools versions, add citation tags and include new pseudocount argument
set zerosToNans=True, such that the optional parameter missingDataAsZero, behaves as expected
added better warning message
NEW: add parameter missingDataAsZero to bamCoverage. The default behaviour is unchanged.
Merge branch 'master' of https://github.com/fidelram/deepTools into multiheatmapper