update RELEASE_NOTES with items unexpectedly removed in a previous commit

RELEASE_NOTES

@@ -26,12 +26,15 @@ Bugs fixed
 ----------
 - Bug 2007 - uan: Remove deprecation on SetRxThresholdDb
 - Bug 2450 - LogDistancePropagationLossModel is not continuous
+- Bug 2477 - DCF manager assert
 - Bug 2492 - uan: Make use of RxGain attribute in UanPhyGen class
 - Bug 2511 - HT Greenfield is not working
 - Bug 2513 - ParetoRandomVariable needs a "scale", not a "mean" attribute.
 - Bug 2521 - Include ipv6-option.h in wscript
 - Bug 2527 - PrintRoutingTable extended to add an optional Time::Units parameter
+- Bug 2529 - Missing trace when Block ACK timeout is triggered or when missing MPDUs are announced by a Block ACK response
 - Bug 2530 - Rename aodv::SetBalckListTimeout to aodv::SetBlackListTimeout
+- Bug 2532 - Inconsistencies between 802.11n MCS and NSS value reported in TXVECTOR
 - Bug 2541 - preamble not assigned correctly
 - Bug 2542 - dead assignment on wifi mac-low