[gxml] Set version to 0.7.0

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 2f1d1807f30f5b9b43bfaea6ab92ed5c075e5add
Author: Daniel Espinosa <esodan gmail com>
Date:   Tue Sep 29 16:32:19 2015 -0500

    Set version to 0.7.0
    
    * Backward compatible with 0.6.0 series

 configure.ac                    |    4 ++--
 gxml/Enumeration.vala           |   16 ++++++++++++++--
 gxml/SerializableValueList.vala |    2 --
 3 files changed, 16 insertions(+), 6 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index be28537..63571be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,8 +11,8 @@
 
 # Release Version
 m4_define([project_major_version], [0])
-m4_define([project_minor_version], [6])
-m4_define([project_micro_version], [2])
+m4_define([project_minor_version], [7])
+m4_define([project_micro_version], [0])
 m4_define([project_nano_version], [0])
 
 # LT_VERSION
diff --git a/gxml/Enumeration.vala b/gxml/Enumeration.vala
index cd40cb5..d11bb93 100644
--- a/gxml/Enumeration.vala
+++ b/gxml/Enumeration.vala
@@ -142,10 +142,22 @@ namespace GXml {
                        return enumc.values;
                }
                /**
-                * Converts a string to a value in a { link GLib.EnumValue}
+                * Transform an enumeration in an array of strings representing enumeration values.
                 *
-                * Returns: a value in a { link GLib.EnumValue}
+                * Returns: an array of strings representing an enumeration.
+                *
+                * @param enumeration: a { link GLib.Type} of type { link GLib.Type.ENUM}
                 */
+               public static string[] to_string_array (Type enumeration) throws GLib.Error
+                       requires (enumeration.is_a (Type.ENUM))
+               {
+                       var vals = Enumeration.to_array (enumeration);
+                       string [] s = {};
+                       for (int i = 0; i < vals.length; i++) {
+                               s += Enumeration.get_nick_camelcase (enumeration, vals[i].value);
+                       }
+                       return s;
+               }
        }
        public errordomain EnumerationError
        {
diff --git a/gxml/SerializableValueList.vala b/gxml/SerializableValueList.vala
index e052d97..16be42b 100644
--- a/gxml/SerializableValueList.vala
+++ b/gxml/SerializableValueList.vala
@@ -28,8 +28,6 @@ using Gee;
  * All values are stored in an array to get access to it by its position using
  * { link SerializableValueList.get_value}.
  */
-using Gee;
-
 public class GXml.SerializableValueList : SerializableObjectModel, SerializableProperty
 {
   private string _val = null;