Fix install lbmpy without VCS
When copying lbmpy out of GIT it is not possible to install it because it can not determine its version. In fact, it is impossible to determine the version then. This MR tries to fix the situation.
When copying lbmpy out of GIT it is not possible to install it because it can not determine its version. In fact, it is impossible to determine the version then. This MR tries to fix the situation.