Update ChangeLog per latest PR revision

Author: jpritikin

ChangeLog

@@ -3,8 +3,7 @@
 	* inst/include/Rcpp.h: Include exceptions_impl.h
 	* inst/include/Rcpp/exceptions.h: Make thread-safe
 	* inst/include/Rcpp/exceptions_impl.h: New home for code moved
-	from inst/include/Rcpp/routines.h and src/api.cpp
-	* src/rcpp_init.cpp: stack_trace no longer exported as an R API
+	from src/api.cpp
 
 2020-01-05  Dirk Eddelbuettel  <[email protected]>