Initial add of KTDBScanTrackClustering
Merge branch 'develop' into DBScan
Split off DBScan implementation into KTDBScan. Incomplete version of KTDBScanTrackClustering.
DBScan progress
Added KTSparseWaterfallCandidateData.
Mostly complete KTDBScanTrackClustering. Untested.
Added TestDBScan
Working version of KTDBScan, plus commented code for another DBSCAN implementation
Restructured the interface between KTDBScanTrackClustering and KTDBScan.  Added optional use of weights.
Added TestDBScanTrackClustering
Progress and debugging of the dbscan track clustering
Memory bug fixed
Improved the hard-coded clustering parameters in TestDBScanTrackClustering.
Cleaned up KTDBScanTrackClustering and filled out the documentation.
Added Hough Transform functions for operating on KTSparseWaterfallCandidateData.
Added scaling and offset variables to KTHoughData.
Changed the name of the Hough Transform signal to "hough"
Added writing Hough Transform data to ROOT trees (compiles but untested)
need to have call clustering once egg-done happens
Added teh ability to write sparse candidate files
excessive prints
Merge branch 'DBScan' of github.com:project8/katydid into DBScan
Added missing initialization