IDE:   1.8.19
Board: UNO

example fastShiftOut: 0.3.1

Performance - time in us
        write: 23.41
        write: 45.89
        Delta: 22.48

writeLSBFIRST: 22.51
writeLSBFIRST: 45.88
        Delta: 23.37

writeMSBFIRST: 23.02
writeMSBFIRST: 44.88
        Delta: 21.86

Standard shiftOut1: 89.85
Standard shiftOut2: 179.59
             Delta: 89.74


Test print interface
println("Hello world"): 	328.92
println(1357): 			313.56
println(3.14159265, 4): 	717.36

done ...

