v0.0.1, 17/10/2012 -- First build
v0.1.0, 18/10/2012 -- Working!
v0.1.1, 19/10/2012 -- Accurately estimte gaps. Doc fixups
v0.1.2, 19/10/2012 -- Small bug fix with printing bam names
v0.1.3, 19/10/2012 -- Copes with slightly overlapping contigs when looking for links
v0.1.4, 28/10/2012 -- Changed fetch behaviour to aavoid pysam issues
v0.1.5, 30/10/2012 -- Changed fetch behaviour to aavoid pysam issues again!
v0.1.6, 30/10/2012 -- allows for unpaired data
