[polari] Bump version to 3.31.91

[Florian Müllner <fmuellner src gnome org>]

commit b23f5a07cbf23ff4310c13caf7408bf062c19c96
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Feb 21 23:41:46 2019 +0100

    Bump version to 3.31.91
    
    Update NEWS.

 NEWS        | 8 ++++++++
 meson.build | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index fa1e6a7..1b375fb 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+3.31.91 — “Tell-A-Queen”
+========================
+* Fix logs when running telepathy-logger sandboxed [Florian; !90]
+* Misc. bug fixes and cleanups [Florian; !89]
+
+Contributors:
+  Florian Müllner
+
 3.31.90 — “Rimming a Snowman”
 =============================
 * Update app icon [Tobias; !78]
diff --git a/meson.build b/meson.build
index 5b847cc..ef8e014 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('polari', 'c',
-  version: '3.31.90',
+  version: '3.31.91',
   meson_version: '>= 0.43.0',
   license: 'GPL2+'
 )