Merge branch 'CI-fix' into 'master'

Fixed CI on Windows

Closes #4

See merge request !21
9 jobs from master in 3 minutes and 51 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #37736
VS2013
VS2013-32-bit

00:00:48

passed #37735
VS2013
VS2013-64-bit

00:00:57

passed #37734
VS2015
VS2015-32-bit

00:01:03

passed #37733
VS2015
VS2015-64-bit

00:01:06

passed #37730
Linux
clang-c++11

00:03:23

passed #37732
Linux
cppcheck

00:00:47

passed #37737
Linux
doc

00:00:22

passed #37729
Linux
gcc-c++11

00:03:51

passed #37731
Apple
macos-c++11

00:01:27