in Histogram, added ability to initialize from a generic array, added constructor Histogram(T[] values, int[] counts), added ability to set and show a label, and changed getProbDist() so it would not include a probability for elements with 0 count (this was causing getEntropy() to return NaN); associated tests in HistogramTest
some cleanup in ProbDistTest and more testing in testGetEntropy()
added public static <T> String arrayToString(T[] a) to Utilities
html output for ProbDist, etc.
modification to html output
changes to how Analyzer output is done
added ability to have AnalyzerServlet receive a list of columns
added AnalyzerServletTest and AnalyzerTest
added updates to Utilities
added call to footer to AnalyzerServlet
changes for past week or two