warnings resolved on secondary classes
fixed bug on similarity thresholding
fixed bug on multiple tag matching, restyled debug output
fixed bug in frame counting in apply() and apply2()
added 2nd RANSAC stage and harmonic mean of inliers-keypoint ratio to
similarity function
gui utils moved to new package
similarity functions moved to ObjectSimilarity class, added
supervisedMerge, fixed minor gui bugs
supervisedMerge() refactored
added LivePlot class and plotting of bgs method statistics