Update NEWS

Author: zdohnal

NEWS

@@ -1,6 +1,9 @@
 1.5.11 changes
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+- make the appstream file validate with version >= 0.6 (https://github.com/zdohnal/system-config-printer/issues/97)
+- fixes for scp-dbus-services (https://github.com/zdohnal/system-config-printer/pull/96)
+- use ValueError instead of ImportError (https://github.com/zdohnal/system-config-printer/pull/95)
+- fix constructing the auth dialog (https://github.com/zdohnal/system-config-printer/pull/93)
 
 1.5.10 changes
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