what I meant by lenientops is that it's better to have strong default in
system.nim and that extra libraries like lenientops would be better to
introduce unsafe auto-conversion between types.
To be clear, lenientops only does conversions for numerical operators at the
moment. The safe conversion would be a `for loop` on the result and `source`:
for i in src.len:
result[i] = uint8(src[i])
Run
Otherwise anything else relies on the implicit representation being the same
either at container+data level (casting the string to seq[uint8]) or at data
level (using `copyMem`).
