Rename emit_elements to emit_body

* Reads a littebit better
* Nameing of methods in abstract Mutator base is still a mess

lib/mutant/mutator.rb

@@ -247,20 +247,20 @@ module Mutant
       end
     end
 
-    # Emit element mutations
+    # Emit body mutations
     #
-    # @param [Array] elements
+    # @param [Array] body
     #
     # @return [undefined]
     #
     # @api private
     #
-    def emit_elements(elements)
-      elements.each_with_index do |element, index|
-        dup_elements = elements.dup
+    def emit_body(body)
+      body.each_with_index do |element, index|
+        dup_body = body.dup
         Mutator.each(element).each do |mutation|
-          dup_elements[index]=mutation
-          emit_self(dup_elements)
+          dup_body[index]=mutation
+          emit_self(dup_body)
         end
       end
     end

lib/mutant/mutator/block.rb

@@ -15,7 +15,7 @@ module Mutant
       #
       def dispatch
         array = node.array
-        emit_elements(array)
+        emit_body(array)
         if array.length > 1
           emit_element_presence(array)
         else

lib/mutant/mutator/literal/array.rb

@@ -20,7 +20,7 @@ module Mutant
           emit_self([])
           emit_self(body.dup << new_nil)
           emit_element_presence(body)
-          emit_elements(body)
+          emit_body(body)
         end
       end
     end

lib/mutant/mutator/literal/hash.rb

@@ -18,7 +18,7 @@ module Mutant
           emit_nil
           emit_values(values)
           emit_element_presence
-          emit_elements(array)
+          emit_body(array)
         end
 
         # Return array of values in literal