fix to!string test
Merge pull request #2549 from IgorStepanov/std-conv-unittest

[trivial] [newaa] fix to!string(aa) test
use ElementType!R1 instead of typeof(inputRange.front)
Merge pull request #2551 from e10s/patch-1

tweak std.range.tee
std.numreic: added sumOfLogarithms

renamed, and updated

remove CustomFloat support

remove blank line

update comment

update return type

rename sumOfLogs -> sumOfLog2s

update unittest
Merge pull request #2500 from 9il/sum-of-logs

added sumOfLog2s
Issue 9535: Add more examples to std.range.sequence.

Demonstrate expected arguments for lambda / explicit function variants.

Demonstrate random access(!).