Update clang-format config and apply

- Regroup and sort #include directives (like we used to, but automatic)
- Set AlwaysBreakTemplateDeclarations to true

src/V3GraphStream.h

@@ -39,7 +39,8 @@
 // not generally safe. If you want a raw pointer compare, see
 // GraphStreamUnordered below.
 
-template <class T_Compare> class GraphStream {
+template <class T_Compare>
+class GraphStream final {
 private:
     // TYPES
     class VxHolder final {