add test for alternative of tail, i.e last
add test for alternative of tail, i.e last

paulbdavis/ledger,duncanmortimer/ledger,jwakely/ledger,afh/ledger,paulbdavis/ledger,jwakely/ledger,duncanmortimer/ledger,jwakely/ledger,paulbdavis/ledger,afh/ledger,ledger/ledger,paulbdavis/ledger,duncanmortimer/ledger,ledger/ledger,afh/ledger,ledger/ledger,paulbdavis/ledger,afh/ledger,jwakely/ledger,duncanmortimer/ledger,duncanmortimer/ledger,jwakely/ledger,afh/ledger,duncanmortimer/ledger,ledger/ledger,paulbdavis/ledger,jwakely/ledger,duncanmortimer/ledger,ledger/ledger,jwakely/ledger,paulbdavis/ledger