Refactored geo2 mesh loader: devided code between libgcm and launcher
Improved xml APIs
Removed loaders for first order meshes since these loaders are broken
Use relative to src include path in libgcm
Renamed header files (.h -> .hpp)
Basic support for exception-based assertions
Switched to own assertions implementation
Refactored msh2 mesh loader
Refactored vtu2 mesh loader
Refactored vtu2 mesh zone loader
Refactored markered box mesh loader
Refactored cubic mesh loader
Removed Params class since it's not used anymore
Removed MeshLoader header from libgcm since it's not used anymore
Moved FileFolderLookupService to launcher.
Removed unused split function
Replaced t_to_string with std::to_string
Removed unused checkStream function
Removed Utils.{c,h}pp