Updated Changes and bumped version to 9.0.0-a3.

Author: johnhaddon

Changes

@@ -1,3 +1,13 @@
+# 9.0.0-a3
+
+#### IECore
+
+- Added SceneInterface::hash() method.
+- Improved ConfigLoader.
+	- Now executes files within the same directory in alphabetical order.
+	- Added subdirectory argument.
+	- Env var accepted in place of search path.
+
 # 9.0.0-a2
 
 #### IECore

SConstruct

@@ -53,7 +53,7 @@ SConsignFile()
 ieCoreMajorVersion=9
 ieCoreMinorVersion=0
 ieCorePatchVersion=0
-ieCoreVersionSuffix="a2"	# used for alpha/beta releases. Example: "a1", "b2", etc.
+ieCoreVersionSuffix="a3"	# used for alpha/beta releases. Example: "a1", "b2", etc.
 
 ###########################################################################################
 # Command line options