[pango] Document PANGO_ATTR_FONT_FEATURES

[Matthias Clasen <matthiasc src gnome org>]

commit 6489105c20bdebc720c223894d947fd5e3cebe49
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Aug 11 20:30:27 2015 -0400

    Document PANGO_ATTR_FONT_FEATURES

 pango/pango-attributes.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/pango/pango-attributes.h b/pango/pango-attributes.h
index 684b4a9..3f783e4 100644
--- a/pango/pango-attributes.h
+++ b/pango/pango-attributes.h
@@ -136,6 +136,7 @@ typedef struct _PangoAttrIterator PangoAttrIterator;
  * @PANGO_ATTR_ABSOLUTE_SIZE: font size in pixels scaled by %PANGO_SCALE (#PangoAttrInt)
  * @PANGO_ATTR_GRAVITY: base text gravity (#PangoAttrInt)
  * @PANGO_ATTR_GRAVITY_HINT: gravity hint (#PangoAttrInt)
+ * @PANGO_ATTR_FONT_FEATURES: OpenType font features (#PangoAttrString). Since 1.38
  *
  * The #PangoAttrType
  * distinguishes between different types of attributes. Along with the