some notes for beta2

RELEASE_NOTES.html

@@ -16,6 +16,10 @@
 
 <h2>Changes since beta1</h2>
 
+<p><strong>recGblGetTimeStamp</strong></p>
+
+<p>If TSE is -1 then recGblGetTimeStamp does not retrieve time. This allows device/driver support to set the time.</p>
+
 <p><strong>aiRecord and aoRecord: Setting eoff=egul</strong></p>
 
 <p>Instead of init_record executing code like</p>