Added comments for newly-added functionality #972

Job	Run time
Test twentytwentyone build script	54s
twentytwentyfive empty file check	8s
Test twentytwenty build script	20s
twentytwentyfour empty file check	6s
Test twentynineteen build script	17s
twentytwentythree empty file check	4s
twentytwentytwo empty file check	3s
twentytwentyone empty file check	7s
twentytwenty empty file check	5s
twentynineteen empty file check	6s
twentyseventeen empty file check	6s
twentysixteen empty file check	7s
twentyfifteen empty file check	7s
twentyfourteen empty file check	6s
twentythirteen empty file check	6s
twentytwelve empty file check	4s
twentyeleven empty file check	5s
twentyten empty file check	8s
Create twentytwentyfive ZIP file	5s
Create twentytwentyfour ZIP file	5s
Create twentytwentythree ZIP file	5s
Create twentytwentytwo ZIP file	5s
Create twentytwentyone ZIP file	5s
Create twentytwenty ZIP file	4s
Create twentynineteen ZIP file	7s
Create twentyseventeen ZIP file	4s
Create twentysixteen ZIP file	7s
Create twentyfifteen ZIP file	5s
Create twentyfourteen ZIP file	4s
Create twentythirteen ZIP file	5s
Create twentytwelve ZIP file	5s
Create twentyeleven ZIP file	8s
Create twentyten ZIP file	7s
Slack Notifications	0s
Failed workflow tasks	0s
	4m 20s

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