* 1. Remove all global include_directories.
* 2. Move 3d party dependencies from src to budled deps if possible.
* Unify and enforce one way of including headers:
e.g. #include "libslic3r/GCode.hpp" vs #include "GCode.hpp"
(always use the "libslic3r/GCode.hpp" option).
* Make all dependencies (also header only) a cmake target.
fix:
Un Itelic redraw
../src/slic3r/Utils/WxFontUtils.hpp:49:77: error: non-const lvalue reference to type 'shared_ptr<...>' cannot bind to a temporary of type 'shared_ptr<...>'
../src/slic3r/Utils/WxFontUtils.hpp:55:75: error: non-const lvalue reference to type 'shared_ptr<...>' cannot bind to a temporary of type 'shared_ptr<...>'