Initial checkin of preqc skeleton
added output of kmer distribution to sga-preqc
Added python script to plot preqc results
added graph branching measure
Added random walk output
Implemented position of first error metric
cleaned up first-error-position metric
Tweaking high-coverage branch thresholds, not final
sga-preqc now outputs JSON using the rapidjson library
Cleanup preqc python
Added fragment size distribution output
First pass at per-base quality score metrics
Cleaned up output
Revising gc composition stats
New gc plot
Added missing rapidjson headers to the makefile, minor formatting tweaks
Minor output changes
New 2D histogram of (gc, coverage) pairs
Fewer data points for gc distribution
Work-in-progress of finding overlaps using approximate seeds