Bumped patch version and updating Changes

Author: andrewkaufman

Changes

@@ -1,3 +1,23 @@
+# 8.4.5
+
+#### IECore
+
+- Fixing seg fault when attempting to read a non-existant attribute several times.
+- Minor fixes for issues highlighted by Coverity.
+
+#### IECoreRI
+
+- Added support for string array options in SXRenderer.
+
+#### IECoreMaya
+
+- MayaScene now outputs the "scene:visible" attribute based on Maya visibility.
+- SceneShapeInterface::componentNames() and selectionName() now work even if the Maya viewport hasn't refreshed.
+
+#### IECoreNuke
+
+- Added support in DeepImageReader for ZBack channels.
+
 # 8.4.4
 
 #### IECore

SConstruct

@@ -52,7 +52,7 @@ SConsignFile()
 
 ieCoreMajorVersion=8
 ieCoreMinorVersion=4
-ieCorePatchVersion=4
+ieCorePatchVersion=5
 ieCoreVersionSuffix=""	# used for alpha/beta releases. Example: "a1", "b2", etc.
 
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