[gtkmm] builder: Fix @newin version number

[Daniel Boles <dboles src gnome org>]

commit 1d768e0cfd668c274a36219e7e16a25096c94cae
Author: Daniel Boles <dboles src gnome org>
Date:   Sun May 19 18:56:25 2019 +0100

    builder: Fix @newin version number
    
    3.94 has been and gone; the current preview version is 3.95, so
    announce that this will arrive in the release of 3.96.

 gtk/src/builder.hg | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gtk/src/builder.hg b/gtk/src/builder.hg
index 6c859b28..d111fe3a 100644
--- a/gtk/src/builder.hg
+++ b/gtk/src/builder.hg
@@ -452,7 +452,7 @@ public:
    * adjustment->set_value(42);
    * @endcode
    *
-   * @newin{3,94}
+   * @newin{3,96}
    *
    * @param name Name of object to get.
    * @return The object named @a name or <tt>nullptr</tt> if it could not be
@@ -465,7 +465,7 @@ public:
   }
 
   /** See the non-const version.
-   * @newin{3,94}
+   * @newin{3,96}
    */
   template <class T_Object> inline
   Glib::RefPtr<const T_Object> get_object(const Glib::ustring& name) const
@@ -525,7 +525,7 @@ public:
    * @param name The name of the widget.
    * @return A pointer to the widget, or <tt>nullptr</tt> on failure.
    *
-   * @newin{3,94}
+   * @newin{3,96}
    */
   template <class T_Widget> inline
   T_Widget* get_widget(const Glib::ustring& name)
@@ -536,7 +536,7 @@ public:
   }
 
   /** See the non-const version.
-   * @newin{3,94}
+   * @newin{3,96}
    */
   template <class T_Widget> inline
   const T_Widget* get_widget(const Glib::ustring& name) const
@@ -643,7 +643,7 @@ public:
    * @param args Additional arguments to pass to the constructor of the derived class.
    * @return widget A pointer to the widget, or <tt>nullptr</tt> on failure.
    *
-   * @newin{3,94}
+   * @newin{3,96}
    */
   template <typename T_Widget, typename... Args> inline
   static T_Widget* get_widget_derived(const Glib::RefPtr<Gtk::Builder>& builder, const Glib::ustring& name, 
Args&&... args)
@@ -654,7 +654,7 @@ public:
   }
 
   /** See the non-const version.
-   * @newin{3,94}
+   * @newin{3,96}
    */
   template <typename T_Widget, typename... Args> inline
   static const T_Widget* get_widget_derived(const Glib::RefPtr<const Gtk::Builder>& builder, const 
Glib::ustring& name, Args&&... args)