ChangeLog update

doc/ChangeLog

@@ -34,11 +34,24 @@ List all files added and what they do: N/A
 
 List all existing files that have been modified, and describe the changes:
 M       bld/build-namelist
+ - set default aircraft emissions for ghg_mam chemistry
+
 M       bld/namelist_files/namelist_defaults_cam.xml
+ - default ne30pg3 aircraft emissions
+
 M       bld/namelist_files/use_cases/sd_waccm_tsmlt_cam6.xml
+ - fix fincl list
+
 M       bld/namelist_files/use_cases/waccm_ma_2000_cam6.xml
+ - remove ne30pg IC from use case (not stable)
+
 M       cime_config/config_pes.xml
+ - default PE layouts for:
+   . WACCM and CAMChem on ne30 grid
+   . WACCM(X) and CAMChem on f19 grid
+
 M       cime_config/testdefs/testlist_cam.xml
+ - adjust tests for waccm on ne30 grids
 
 If there were any failures reported from running test_driver.sh on any test
 platform, and checkin with these failures has been OK'd by the gatekeeper,