Added logging, refactored versioning; STB is now included

- Added logging
- Rewrote versioning code
- Refactored dependency management
  - STB (stb_image.h) is now included
  - All other dependencies now use find_package
- Cross-compilation from Linux to Windows is now possible

tools/clang-format/use-clang-format.sh

@@ -55,9 +55,7 @@ $unstaged_changes"
         fi
 
         git diff -U0 --no-color --relative HEAD \
-            '*.cpp' \
-            '*.h' \
-            '*.inl' \
+            {desktop,main}/{'*.cpp','*.h','*.inl'} \
         | command "$CLANG_FORMAT_DIFF" -p1 -style="$style" -i --verbose
         exit_code="$?"
         git add "$root_dir"