Use a precompiled header for many std includes.

src/Collections/Dictionary.hpp

@@ -1,7 +1,5 @@
 #ifndef ARBUTILS_DICTIONARY_HPP
 #define ARBUTILS_DICTIONARY_HPP
-#include <cstdint>
-#include <unordered_map>
 #include "../Assert.hpp"
 
 namespace ArbUt {

src/Collections/List.hpp

@@ -1,9 +1,5 @@
 #ifndef ARBUTILS_LIST_HPP
 #define ARBUTILS_LIST_HPP
-#include <algorithm>
-#include <sstream>
-#include <stdexcept>
-#include <vector>
 #include "../Exception.hpp"
 
 namespace ArbUt {