Merge pull request #14 from eile/master

Fix build
Removed custom code for tests and reuse CMake subtree.
Bumped gitexternals.
Merge pull request #15 from hernando/master

Removed custom code for tests and reuse CMake subtree.
Update CMake, cppcheck fixes
Merge pull request #16 from tribal-tec/master

Update CMake, cppcheck fixes
Update CMake subtree and generated files