working on coverage issues
fix coverage abberations due to contig trimming (thanks to Charlie Xia for the bug report!), fix coverge dropouts due to contigs with gap bases (NNNN), add debug mode
fix coverage abberations due to contig trimming (thanks to Charlie Xia for the bug report!), fix coverge dropouts due to contigs with gap bases (NNNN), add debug mode
Merge pull request #15 from adamewing/fixcover

Fixcover