* add sorted data to Historgram (microsoft#197)

Co-authored-by: Feng Li <[email protected]>

* multiple updates from msft internal
2.1.2 prerelease

flush stdout to force XML/text results through prior to process exit
fix issues identified by vs2019 build loop - 64->32 downcast, minor printf issues, _snprintf -> _snprintf_s
timestamp prefixes for all verbose output
dump specific time intervals for warmup/measured/cooldown to validate v. expected @ actual time of use/measurement
only emit warmup/cooldown verbose output notes if there is nonzero warmup/cooldown specified in the profile
minor cleanup of load thread verbose output so that everything has a consistent thread N: prefix
histogram processing speedups, about 60% for XML (all percentiles)
implicitly seal/sort histogram on first read operation, reset on subsequent inserts; save repeated re-sorting
save histogram percentile iterator so that asecending percentile queries do not restart from lowest sample
min/max in terms of begin/rbegin iterator
show latency histogram bucket counts in XML results; potential work to moderate histogram size
unit test coverage

* DISKSPD 2.2

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Co-authored-by: FengLiMS <[email protected]>
Co-authored-by: Feng Li <[email protected]>
Co-authored-by: Dan Lovinger <[email protected]>

Fix typo in 2.2 relnote