Theoretically the previous was not a valid YAML at all, but it is
fairly common for parsers to accept it, just in a wrong way. This
results in a configuration where only the last value for duplicate
keys is taken, instead of a hard error.
Also had to add new project to redirect CTest output, add
separate batch scripts for AppVeyor because it doesn't handle
multi-line batch scripts in yaml properly, and other helper
scripts.
* Every Linux build tracks coverage when running Debug mode
* OS X not supported yet (Future WIP)
* Our own unit tests, non-default reporters and Clara are ignored
