use 5bytes instead of int64, fix ToI func
make ToI test a bit more asymmetric
update comment given that not using uint64 anymore
ctor renames; handle too many bytes by taking LSBytes
part and full addr use new [5]byte xaddr
change >5 byte slice rules to use MSbytes instead of LSB
full xaddr now has io.ReaderFrom and io.WriterTo
fix rxaddr tests to use new ctors on xaddr
update cmd to use &reg.R; might change that back later, don't like
update txaddr to use new xaddr ctor
cmd funcs use reg.Register interface. fix rf24 for now
add reg.Register interface
remove tests that go into xaddr now