diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09444f7..a8187a8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ list(APPEND CPACK_SOURCE_IGNORE_FILES ".swp")
 list(APPEND CPACK_SOURCE_IGNORE_FILES ".*~")
 
 set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/license.txt")
-set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/readme.txt")
+set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/readme.md")
 set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/description.txt")
 
 set(CPACK_PACKAGE_VERSION_MAJOR 5)
diff --git a/include/chaiscript/dispatchkit/bootstrap.hpp b/include/chaiscript/dispatchkit/bootstrap.hpp
index 1a45b5d..b7fdc04 100644
--- a/include/chaiscript/dispatchkit/bootstrap.hpp
+++ b/include/chaiscript/dispatchkit/bootstrap.hpp
@@ -443,6 +443,7 @@ namespace chaiscript
         bootstrap_pod_type<long double>("long_double", m);
         bootstrap_pod_type<float>("float", m);
         bootstrap_pod_type<int>("int", m);
+        bootstrap_pod_type<long>("long", m);
         bootstrap_pod_type<unsigned int>("unsigned_int", m);
         bootstrap_pod_type<unsigned long>("unsigned_long", m);
         bootstrap_pod_type<size_t>("size_t", m);
diff --git a/include/chaiscript/dispatchkit/bootstrap_stl.hpp b/include/chaiscript/dispatchkit/bootstrap_stl.hpp
index b26e9ca..40ff1df 100644
--- a/include/chaiscript/dispatchkit/bootstrap_stl.hpp
+++ b/include/chaiscript/dispatchkit/bootstrap_stl.hpp
@@ -148,6 +148,96 @@ namespace chaiscript
         };
 
       namespace detail {
+        template<typename T>
+          int return_int_impl(const std::function<typename T::size_type (const T *)> &t_func, const T *t_obj)
+          {
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4267)
+#endif
+            return t_func(t_obj);
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+          }
+
+        template<typename T>
+        std::function<int (const T *)> return_int(size_t (T::*t_func)() const)
+          {
+            return std::bind(&return_int_impl<T>, std::function<size_t (const T *)>(std::mem_fn(t_func)), std::placeholders::_1);
+          }
+
+        template<typename T, typename P1>
+          int return_int_impl(const std::function<typename T::size_type (const T *, P1)> &t_func, const T *t_obj, P1 p1)
+          {
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4267)
+#endif
+            return t_func(t_obj, p1);
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+          }
+
+        template<typename T, typename P1>
+          int return_int_impl_non_const(const std::function<typename T::size_type (T *, P1)> &t_func, T *t_obj, P1 p1)
+          {
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4267)
+#endif
+            return t_func(t_obj, p1);
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+          }
+
+        template<typename T, typename P1>
+        std::function<int (const T *, P1)> return_int(size_t (T::*t_func)(P1) const)
+          {
+            return std::bind(&return_int_impl<T, P1>, std::function<size_t (const T *, P1)>(std::mem_fn(t_func)), std::placeholders::_1, std::placeholders::_2);
+          }
+
+        template<typename T, typename P1>
+        std::function<int (T *, P1)> return_int(size_t (T::*t_func)(P1) )
+          {
+            return std::bind(&return_int_impl_non_const<T, P1>, std::function<size_t (T*, P1)>(std::mem_fn(t_func)), std::placeholders::_1, std::placeholders::_2);
+          }
+
+
+        template<typename T, typename P1, typename P2>
+          int return_int_impl(const std::function<typename T::size_type (const T *, P1, P2)> &t_func, const T *t_obj, P1 p1, P2 p2)
+          {
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4267)
+#endif
+            return t_func(t_obj, p1, p2);
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+          }
+
+        template<typename T, typename P1, typename P2>
+        std::function<int (const T *, P1, P2)> return_int(size_t (T::*t_func)(P1, P2) const)
+          {
+            return std::bind(&return_int_impl<T, P1, P2>, std::function<size_t (const T *, P1, P2)>(std::mem_fn(t_func)), std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
+          }
+
+        template<typename T>
+          void insert(T &t_target, const T &t_other)
+          {
+            t_target.insert(t_other.begin(), t_other.end());
+          }
+
+        template<typename T>
+          void insert_ref(T &t_target, const typename T::value_type &t_val)
+          {
+            t_target.insert(t_val);
+          }
+
+
 
         /**
          * Add Bidir_Range support for the given ContainerType
@@ -393,6 +483,23 @@ namespace chaiscript
         {
           m->add(fun<int (const ContainerType *, const typename ContainerType::key_type &)>(&ContainerType::count), "count");
 
+
+          typedef size_t (ContainerType::*erase)(const typename ContainerType::key_type &);
+          erase eraseptr(&ContainerType::erase);
+
+          m->add(fun(std::function<int (ContainerType *, const typename ContainerType::key_type &)>(detail::return_int(eraseptr))), "erase");
+
+          m->add(fun(&detail::insert<ContainerType>), "insert");
+
+          std::string insert_name;
+          if (typeid(typename ContainerType::mapped_type) == typeid(Boxed_Value))
+          {
+            insert_name = "insert_ref";
+          } else {
+            insert_name = "insert";
+          }
+
+          m->add(fun(&detail::insert_ref<ContainerType>), insert_name);
           return m;
         }
 
diff --git a/include/chaiscript/language/chaiscript_eval.hpp b/include/chaiscript/language/chaiscript_eval.hpp
index 2c3fd3f..0621a7f 100644
--- a/include/chaiscript/language/chaiscript_eval.hpp
+++ b/include/chaiscript/language/chaiscript_eval.hpp
@@ -104,6 +104,9 @@ namespace chaiscript
         Int_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Int, const std::shared_ptr<std::string> &t_fname=std::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
           AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col), 
           m_value(const_var(int(atoi(t_ast_node_text.c_str())))) { }
+        Int_AST_Node(const std::string &t_ast_node_text = "", const Boxed_Value &t_bv = const_var(0), int t_id = AST_Node_Type::Int, const std::shared_ptr<std::string> &t_fname=std::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
+          AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col), 
+          m_value(t_bv) { }
         virtual ~Int_AST_Node() {}
         virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &){
           return m_value;
@@ -119,6 +122,9 @@ namespace chaiscript
         Float_AST_Node(const std::string &t_ast_node_text = "", int t_id = AST_Node_Type::Float, const std::shared_ptr<std::string> &t_fname=std::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
           AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col),
           m_value(const_var(double(atof(t_ast_node_text.c_str())))) { }
+        Float_AST_Node(const std::string &t_ast_node_text = "", const Boxed_Value &t_bv = const_var(0), int t_id = AST_Node_Type::Float, const std::shared_ptr<std::string> &t_fname=std::shared_ptr<std::string>(), int t_start_line = 0, int t_start_col = 0, int t_end_line = 0, int t_end_col = 0) :
+          AST_Node(t_ast_node_text, t_id, t_fname, t_start_line, t_start_col, t_end_line, t_end_col),
+          m_value(t_bv) { }
         virtual ~Float_AST_Node() {}
         virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &){
           return m_value;
diff --git a/include/chaiscript/language/chaiscript_parser.hpp b/include/chaiscript/language/chaiscript_parser.hpp
index 3172672..8f5c2b3 100644
--- a/include/chaiscript/language/chaiscript_parser.hpp
+++ b/include/chaiscript/language/chaiscript_parser.hpp
@@ -33,6 +33,8 @@ namespace chaiscript
           ,   bin_alphabet
           ,   id_alphabet
           ,   white_alphabet
+          ,   int_suffix_alphabet
+          ,   float_suffix_alphabet
           ,   max_alphabet
           ,   lengthof_alphabet = 256
       };
@@ -175,6 +177,17 @@ namespace chaiscript
 
         m_alphabet[detail::white_alphabet][static_cast<int>(' ')]=true;
         m_alphabet[detail::white_alphabet][static_cast<int>('\t')]=true;
+
+        m_alphabet[detail::int_suffix_alphabet][static_cast<int>('l')] = true;
+        m_alphabet[detail::int_suffix_alphabet][static_cast<int>('L')] = true;
+        m_alphabet[detail::int_suffix_alphabet][static_cast<int>('u')] = true;
+        m_alphabet[detail::int_suffix_alphabet][static_cast<int>('U')] = true;
+
+        m_alphabet[detail::float_suffix_alphabet][static_cast<int>('l')] = true;
+        m_alphabet[detail::float_suffix_alphabet][static_cast<int>('L')] = true;
+        m_alphabet[detail::float_suffix_alphabet][static_cast<int>('f')] = true;
+        m_alphabet[detail::float_suffix_alphabet][static_cast<int>('F')] = true;
+
       }
 
       /**
@@ -343,6 +356,12 @@ namespace chaiscript
                 ++m_input_pos;
                 ++m_col;
               }
+
+              while (has_more_input() && char_in_alphabet(*m_input_pos, detail::float_suffix_alphabet))
+              {
+                ++m_input_pos;
+                ++m_col;
+              }
             }
             else {
               --m_input_pos;
@@ -371,6 +390,11 @@ namespace chaiscript
                 ++m_input_pos;
                 ++m_col;
               }
+              while (has_more_input() && char_in_alphabet(*m_input_pos, detail::int_suffix_alphabet))
+              {
+                ++m_input_pos;
+                ++m_col;
+              }
             }
             else {
               --m_input_pos;
@@ -386,6 +410,14 @@ namespace chaiscript
         return retval;
       }
 
+      void IntSuffix_() {
+        while (has_more_input() && char_in_alphabet(*m_input_pos, detail::int_suffix_alphabet))
+        {
+          ++m_input_pos;
+          ++m_col;
+        }
+      }
+
       /**
        * Reads a binary value from input, without skipping initial whitespace
        */
@@ -419,6 +451,110 @@ namespace chaiscript
         return retval;
       }
 
+      Boxed_Value buildFloat(const std::string &t_val)
+      {
+        bool float_ = false;
+        bool long_ = false;
+
+        size_t i = t_val.size();
+
+        for (; i > 0; --i)
+        {
+          char val = t_val[i-1];
+
+          if (val == 'f' || val == 'F')
+          {
+            float_ = true;
+          } else if (val == 'l' || val == 'L') {
+            long_ = true;
+          } else {
+            break;
+          }
+        }
+
+        std::stringstream ss(t_val.substr(0, i));
+
+        if (float_)
+        {
+          float f;
+          ss >> f;   
+          return Boxed_Value(const_var(f));
+        } else if (long_) {
+          long double f;
+          ss >> f;   
+          return Boxed_Value(const_var(f));
+        } else {
+          double f;
+          ss >> f;   
+          return Boxed_Value(const_var(f));
+        }
+      }
+
+      template<typename IntType>
+      Boxed_Value buildInt(const IntType &t_type, const std::string &t_val)
+      {
+        bool unsigned_ = false;
+        bool long_ = false;
+        bool longlong_ = false;
+
+        size_t i = t_val.size();
+
+        for (; i > 0; --i)
+        {
+          char val = t_val[i-1];
+
+          if (val == 'u' || val == 'U')
+          {
+            unsigned_ = true;
+          } else if (val == 'l' || val == 'L') {
+            if (long_)
+            {
+              longlong_ = true;
+            }
+
+            long_ = true;
+          } else {
+            break;
+          }
+        }
+
+        std::stringstream ss(t_val.substr(0, i));
+        ss >> t_type;
+
+        if (unsigned_)
+        {
+          if (longlong_)
+          {
+            uint64_t val;
+            ss >> val;   
+            return Boxed_Value(const_var(val));
+          } else if (long_) {
+            unsigned long val;
+            ss >> val;
+            return Boxed_Value(const_var(val));
+          } else {
+            unsigned int val;
+            ss >> val;
+            return Boxed_Value(const_var(val));
+          }
+        } else {
+          if (longlong_)
+          {
+            int64_t val;
+            ss >> val;   
+            return Boxed_Value(const_var(val));
+          } else if (long_) {
+            long val;
+            ss >> val;
+            return Boxed_Value(const_var(val));
+          } else {
+            int val;
+            ss >> val;
+            return Boxed_Value(const_var(val));
+          }
+        }
+      }
+
       /**
        * Reads a number from the input, detecting if it's an integer or floating point
        */
@@ -435,19 +571,14 @@ namespace chaiscript
           if (has_more_input() && char_in_alphabet(*m_input_pos, detail::float_alphabet) ) {
             if (Hex_()) {
               std::string match(start, m_input_pos);
-              std::stringstream ss(match);
-              unsigned int temp_int;
-              ss >> std::hex >> temp_int;
-
-              std::ostringstream out_int;
-              out_int << static_cast<int>(temp_int);
-              AST_NodePtr t(new eval::Int_AST_Node(out_int.str(), AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
+              Boxed_Value i = buildInt(std::hex, match);
+              AST_NodePtr t(new eval::Int_AST_Node(match, i, AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
               m_match_stack.push_back(t);
               return true;
             }
             if (Binary_()) {
               std::string match(start, m_input_pos);
-              int temp_int = 0;
+              int64_t temp_int = 0;
               size_t pos = 0, end = match.length();
 
               while ((pos < end) && (pos < (2 + sizeof(int) * 8))) {
@@ -458,32 +589,36 @@ namespace chaiscript
                 ++pos;
               }
 
-              std::ostringstream out_int;
-              out_int << temp_int;
-              AST_NodePtr t(new eval::Int_AST_Node(out_int.str(), AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
+              Boxed_Value i;
+              if (match.length() <= sizeof(int) * 8)
+              {
+                i = Boxed_Value(const_var(int(temp_int)));
+              } else {
+                i = Boxed_Value(const_var(temp_int));
+              }
+
+              AST_NodePtr t(new eval::Int_AST_Node(match, i, AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
               m_match_stack.push_back(t);
               return true;
             }
             if (Float_()) {
               std::string match(start, m_input_pos);
-              AST_NodePtr t(new eval::Float_AST_Node(match, AST_Node_Type::Float, m_filename, prev_line, prev_col, m_line, m_col));
+              Boxed_Value f = buildFloat(match);
+              AST_NodePtr t(new eval::Float_AST_Node(match, f, AST_Node_Type::Float, m_filename, prev_line, prev_col, m_line, m_col));
               m_match_stack.push_back(t);
               return true;
             }
             else {
+              IntSuffix_();
               std::string match(start, m_input_pos);
               if ((match.size() > 0) && (match[0] == '0')) {
-                std::stringstream ss(match);
-                unsigned int temp_int;
-                ss >> std::oct >> temp_int;
-
-                std::ostringstream out_int;
-                out_int << int(temp_int);
-                AST_NodePtr t(new eval::Int_AST_Node(out_int.str(), AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
+                Boxed_Value i = buildInt(std::oct, match);
+                AST_NodePtr t(new eval::Int_AST_Node(match, i, AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
                 m_match_stack.push_back(t);
               }
               else {
-                AST_NodePtr t(new eval::Int_AST_Node(match, AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
+                Boxed_Value i = buildInt(std::dec, match);
+                AST_NodePtr t(new eval::Int_AST_Node(match, i, AST_Node_Type::Int, m_filename, prev_line, prev_col, m_line, m_col));
                 m_match_stack.push_back(t);
               }
               return true;
diff --git a/unittests/map.chai b/unittests/map.chai
index a0a31ee..b2901ce 100644
--- a/unittests/map.chai
+++ b/unittests/map.chai
@@ -1 +1,29 @@
 assert_equal([true, false, true], map([1,2,3], odd))
+
+
+
+var m = ["a":1, "b":2];
+
+assert_equal(1, m.count("a"))
+assert_equal(0, m.count("c"))
+assert_equal(1, m.erase("a"))
+assert_equal(1, m.size())
+assert_equal(0, m.erase("a"))
+
+assert_equal(1, m.size());
+
+var m2 = ["c":3, "b":4]
+m.insert(m2);
+
+assert_equal(3, m["c"])
+// The inserted values do not overwrite the existing ones
+assert_equal(2, m["b"])
+assert_equal(2, m.size())
+
+var v = "bob";
+
+m.insert_ref(Map_Pair("d", v))
+
+assert_equal("bob", m["d"])
+v = "bob2"
+assert_equal("bob2", m["d"])