--- ray/doc/notes/ReleaseNotes	2014/11/12 17:42:34	1.250
+++ ray/doc/notes/ReleaseNotes	2015/02/24 19:39:26	1.254
@@ -2000,3 +2000,15 @@ Fixed bug in tensor tree BSDF code that caused bus err
 some systems, and may have been source of other errors as well.
 
 (Above changes included in 4.2.2 patch release.)
+
+Improved ambient extrapolation to avoid zero values.  Actual
+threshold set to 5% of recorded value.
+
+Changed anisotropic Gaussian and Ashikhmin models so that
+illegal orientation vectors are dealt with more gracefully.
+
+Created wrapBSDF tool and incorporated into genBSDF along
+with new rfluxmtx computation.
+
+Initial check-in of Roland Schregle's photon map integration.
+New 5.0a version designation as suggested by Andy McNeil.