update change log

9 jobs for iterators in 6 minutes and 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed clang-c++11 #77325
Linux

00:06:25

passed cppcheck #77327
Linux

00:03:32

passed doc #77332
Linux

00:00:22

passed gcc-c++11 #77324
Linux

00:04:00

passed macos-c++11 #77326
Apple

00:03:09

passed VS2015-32-bit #77331
VS2015

00:01:13

passed VS2015-64-bit #77330
VS2015

00:01:26

passed VS2017-32-bit #77329
VS2017

00:01:16

passed VS2017-64-bit #77328
VS2015

00:01:25