[#86] Fix for implicit instantiation of undefined template

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

include/vkcv/Event.hpp

@@ -2,6 +2,7 @@
 
 #include <functional>
 #include <mutex>
+#include <vector>
 
 namespace vkcv {
 	

src/vkcv/Window.cpp

@@ -4,7 +4,9 @@
  * @brief Window class to handle a basic rendering surface and input
  */
 
+#include <vector>
 #include <GLFW/glfw3.h>
+
 #include "vkcv/Window.hpp"
 
 namespace vkcv {