Release 3.3.0 (#762)

* Release 3.3.0

* Update meson.build

Author: danirabbit

data/gala.appdata.xml.in

@@ -10,7 +10,7 @@
     <p>A window &amp; compositing manager based on libmutter and designed by elementary for use with Pantheon.</p>
   </description>
   <releases>
-    <release version="3.3.0" date="2020-04-01" urgency="medium">
+    <release version="3.3.0" date="2020-04-02" urgency="medium">
       <description>
         <p>Improvements:</p>
         <ul>

meson.build

@@ -1,6 +1,6 @@
 project('gala',
 	'c', 'vala',
-	version: '3.2.0',
+	version: '3.3.0',
 	meson_version: '>= 0.48.0',
 	license: 'GPL3',
 )