Move headers into include folder and add single header to include all reachability algorithms

include/algorithm/roditty_zwick.h

@@ -1,5 +1,5 @@
-#ifndef RODITTY_ZWICK_H_
+#ifndef RODITTY_ZWICK_SCC_H_
-#define RODITTY_ZWICK_H_
+#define RODITTY_ZWICK_SCC_H_
 
 #include "algorithm/decremental_reachability.h"
 #include "algorithm/tarjan.h"

include/roditty_zwick.h

@@ -0,0 +1,9 @@
+#ifndef RODITTY_ZWICK_H_
+#define RODITTY_ZWICK_H_
+
+#include "algorithm/italiano.h"
+#include "algorithm/frigioni.h"
+#include "algorithm/king.h"
+#include "algorithm/henzinger_king.h"
+
+#endif