updating changelog to reflect fix for subcommands being reserved python keywords
updating changelog to reflect fix for subcommands being reserved python keywords

lwgarmstrong/sh,rsmith31415/sh,germangh/sh,Stupeflix/sh,twocngdagz/sh,pdelong42/sh,rdhyee/sh,z-fork/sh,amoffat/sh,achernet/sh,simudream/sh,ppannuto/sh,amoffat/sh,jakirkham/sh,pombredanne/sh