Merge branch 'master' into 'master'

introduce variableMapping, default equation name tags in M_ and JSON output

See merge request !3
6 jobs for master in 2 minutes and 18 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #8979
build_linux_32

00:00:49

passed #8980
build_linux_64

00:01:28

passed #8983
macOS
build_macOS

00:02:13

passed #8981
build_windows_32

00:01:29

passed #8982
build_windows_64

00:01:36

 
  Prepare
passed #8984
aggregate_builds

00:00:04