sd -- a drop-in replacement for `cd'

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/_ | / _ \ |  ____|| ____| / _ \ |  __ \  / _ \  / ____|
 | || (_) || |__   | |__  | | | || |  | || (_) || |     
 | | > _ < |  __|  |___ \ | | | || |  | | > _ < | |     
 | || (_) || |____  ___) || |_| || |__| || (_) || |____ 
 |_| \___/ |______||____/  \___/ |_____/  \___/  \_____|