Update Release Notes for Issue 243

Author: AdrianJSClark

src/Aydsko.iRacingData/Package Release Notes.txt

@@ -20,4 +20,5 @@ NEW FEATURE: iRacing OAuth "Authorization Code Grant" Authentication
 
 
 FIXES / NEW IMPLEMENTATIONS:
-- Implement "/data/session/reg_drivers_list" to retrieve drivers registered for an active session (Issue #248)
+- Implement "/data/session/reg_drivers_list" to retrieve drivers registered for an active session. (Issue #248)
+- Add ability to change iRacing "Data API" base URL (e.g. if you have access to one of iRacing's test environments) via the "ApiBaseUrl" property. (Issue #243)