state_push/pop in Sheet now check whether a given output function is of class TransferFnWithState begfore it calls its state_push/pop
state_push/pop in Sheet now check whether a given output function is of class TransferFnWithState begfore it calls its state_push/pop

ioam/svn-history,ioam/svn-history,ioam/svn-history,ioam/svn-history,ioam/svn-history