Changes : Fix ToMayaMeshConveter Locked Normals

Author: chrisc-lee

Changes

@@ -1,6 +1,13 @@
 10.5.x.x (relative to 10.5.1.0)
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+Breaking Changes
+----------------
+- IECoreMaya : Maya meshes converted from Cortex data no longer have normals set explicitly and instead relies on Maya to calculate them.
+
+Fixes
+---
+- ToMayaMeshConverter : No longer locks normals set on the Mesh from the scc.
 
 10.5.1.0 (relative to 10.5.0.0)
 ========