* Added fraction accumulator
* Added binomial proportion interval computers: Wald, Wilson Score, Clopper Pearson, Jeffreys
* Width of intervals for all classes can be set via deviation or confidence_level
* Support valarray in histogram::fill
* Add fraction and count to user guide
Co-authored-by: Hans Dembinski <hans.dembinski@gmail.com>
Co-authored-by: Hans Dembinski <HDembinski@users.noreply.github.com>
* provide unsafe access to buffer
* factored mp_int out into separate header and renamed to large_int
* refined adding behavior
* more warnings and comeback of coverage variant
* better coverage reporting