move #864/#865's release note to after 1.12.0

It was planned to go into 1.12.0, but didn't make it

RELEASE_NOTES.md

@@ -21,6 +21,10 @@ What's New
  * correction in FIX41 and FIX42: `D` to `UNDISCLOSED`
 
 **Non-breaking changes**
+* #864 - when multiple threads race to init DefaultMessageFactory,
+ fix it so that later threads do not return before the first thread
+ finishes loading all the dlls (gbirchmeier, with thanks to diagnosis by Brian Leach aka baffled)
+ (Note: this may be the cause of spurious "incorrect BeginString" issues that have been observed)
 * #877 - throw an exception if Message.ToJSON(dd=null,convertEnumsToDescriptions=true) is called (gbirchmeier)
 
 ### v1.12.0
@@ -101,10 +105,6 @@ What's New
 * #839 - change ScreenLog to output FIX messages with "|" instead of non-visible SOH (gbirchmeier)
 * #844 - implement "Weekdays" setting (MichalUssuri/gbirchmeier)
 * #859 - implement proper path searching for CA certs in config (gbirchmeier)
-* #864 - when multiple threads race to init DefaultMessageFactory,
- fix it so that later threads do not return before the first thread
- finishes loading all the dlls (gbirchmeier, with thanks to diagnosis by Brian Leach aka baffled)
- (Note: this may be the cause of spurious "incorrect BeginString" issues that have been observed)
 
 ### v1.11.2:
 * same as v1.11.1, but I fixed the readme in the pushed nuget packages