- Updated changelog

- Always emit warning
Status Job ID Name Coverage
  Test
passed #4123
Linux
clang-c++11

00:22:36

passed #4125
Linux
clang-c++98

00:15:43

passed #4122
Linux
gcc-c++11

00:06:02

passed #4124
Linux
gcc-c++98

00:04:19

passed #4126
Apple
macos-c++11

00:16:36

passed #4127
Apple
macos-c++98

00:09:47