[evolution-mapi] NEWS update for 3.21.91

[Milan Crha <mcrha src gnome org>]

commit b24497f436f4195d56910d1be9f9b831391ca78f
Author: Milan Crha <mcrha redhat com>
Date:   Mon Aug 29 15:16:05 2016 +0200

    NEWS update for 3.21.91

 NEWS |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 24d8ec2..6983edc 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+evolution-mapi 3.21.91 2016-08-29
+---------------------------------
+
+Miscellaneous:
+       Simplify and correct free/busy time calculation (Milan Crha)
+       Books do not recognize offline usage before being opened (Milan Crha)
+
+Translations:
+       Piotr Drąg (pl)
+       Matej Urbančič (sl)
+
 evolution-mapi 3.21.90 2016-08-15
 ---------------------------------