mishoo/UglifyJS2 — pull request #584 by clyfish (2014-12-01 05:24:45+00:00)
Title: fix base54

Current version of base54:
base54(54)=='ab'
base54(54+54*64)=='abb'
base54(54+54*64-1)=='_ab'

My version:
base54(54)=='aa'
base54(54+54*64)=='aaa'
base54(54+54*64-1)=='_9'