Fix unicode-insensitivity of radio lookup, pick up default when improvement.
Add code to calculate and return approximate bounded accuracies, cc #196.
Add metrics for accuracy, overloading the concept of 'timer' to get percentiles, cc #196.
Adapt tests to new accuracy results, cc #196.
Merge pull request #199 from graydon/bug-196-report-estimated-accuracy-values

Bug 196 report estimated accuracy values