Change value for parsed Hash to array of hashes

This fixes wrong parsing of Hashes like {a: 1, b: '2'} to
{hash: {Symbol => String}} instead of
{hash: [{Symbol => Fixnum}, {Symbol => String}]}

lib/code_breaker/parsable/data_types.rb

@@ -45,14 +45,11 @@ def parse_int_node(node)
           node.children[0].class
         end
 
-        def parse_hash_node(node)
-          { node.type => parse_children(node).inject(:merge).to_h }
-        end
-
         def parse_pair_node(node)
           { parse(node.children[0]) => parse(node.children[1]) }
         end
 
+        alias :parse_hash_node :parse_as_hash
         alias :parse_array_node :parse_as_hash
       end
     end

spec/code_breaker/parser/data_types_spec.rb

@@ -32,7 +32,13 @@
     context 'for a root node representing a Hash' do
       it 'returns a Hash with key :hash and a Hash of key/type pairs' do
         input = "{ euro: '€', 'dollar' => 1.1521 }"
-        output = { hash: { Symbol => String, String => Float } }
+        output = { hash: [{ Symbol => String }, { String => Float }] }
+        expect(input).to be_parsed_as output
+      end
+
+      it 'returns a Hash with key :hash and a Hash of key/type pairs' do
+        input = "{ euro: '€', dollar: 1.1521 }"
+        output = { hash: [{ Symbol => String }, { Symbol => Float }] }
         expect(input).to be_parsed_as output
       end
     end

spec/code_breaker/parser/language_elements_spec.rb

@@ -80,7 +80,7 @@
             {
               args: [
                 { arg: :name},
-                { optarg: [:options, { hash: { Symbol => Fixnum } }] }
+                { optarg: [:options, { hash: [{ Symbol => Fixnum }] }] }
               ]
             },
             String