Set version to 2.2.1

CMakeModules/VersionConfiguration.cmake

@@ -22,7 +22,7 @@ endif()
 
 set(VERSION_MAJOR 2)
 set(VERSION_MINOR 2)
-set(VERSION_NANO 0)
+set(VERSION_NANO 1)
 
 option(UPGRADE_DEBUG "" OFF)
 

release-notes/2.2.1.txt

@@ -0,0 +1,5 @@
+2017-12-15
+
+FIXED:
+
+ - (macOS, pre-10.12) Fixed crash on launch