ewma_test.go | 96 48 + 48 - 0 !
histogram_test.go | 10 5 + 5 - 0 !
sample_test.go | 29 19 + 10 - 0 !
timer_test.go | 2 1 + 1 - 0 !
4 files changed, 73 insertions(+), 64 deletions(-)

 [patch] optimize the samplexxx function and fixes #249
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NB: I've stripped out the optimizations as they are not merged upstream. I did,
however, keep in the parts that fix the bitwise float comparison numerics. The
test-code now does a delta test instead which should work more reliably.