WaypointManager is no longer a Singleton, wrote waypoint API outline

I'm planning on giving each room it's own waypoint manager, so it can
compare it's waypoints against the characters in that room alone. If it
turns out to be a good pattern, I'll do thae same for monsters.

server/waypoints/waypoint_manager.hpp

@@ -22,9 +22,9 @@
 #ifndef WAYPOINTMANAGER_HPP_
 #define WAYPOINTMANAGER_HPP_
 
-#include "waypoint_data.hpp"
-#include "singleton.hpp"
+#include "bounding_box.hpp"
 #include "vector2.hpp"
+#include "waypoint_data.hpp"
 
 #include "lua.hpp"
 
@@ -32,11 +32,13 @@
 #include <map>
 #include <string>
 
-//TODO: should waypoints be managed on a per-room basis?
-class WaypointManager: public Singleton<WaypointManager> {
+class WaypointManager {
 public:
+	WaypointManager() = default;
+	~WaypointManager() = default;
+
 	//common public methods
-	int Create();
+	int Create(Vector2 origin, BoundingBox bounds);
 	void Unload(int uid);
 
 	void UnloadAll();
@@ -45,19 +47,13 @@ public:
 	//accessors & mutators
 	WaypointData* Get(int uid);
 	int GetLoadedCount();
-	int GetTotalCount();
 	std::map<int, WaypointData>* GetContainer();
 
 	//hooks
-	lua_State* SetLuaState(lua_State* L) { return lua = L; }
-	lua_State* GetLuaState() { return lua; }
+	lua_State* SetLuaState(lua_State* L);
+	lua_State* GetLuaState();
 
 private:
-	friend Singleton<WaypointManager>;
-
-	WaypointManager() = default;
-	~WaypointManager() = default;
-
 	//members
 	std::map<int, WaypointData> elementMap;
 	lua_State* lua = nullptr;