Managing around sudo or missing permissions

[zifeo]

Great utility! I faced some users who install directly the binary into /usr/local/bin which requires sudo. Self update fails with Permission denied (os error 13) at path "/usr/local/bin/xxx_downloadB8hENF". How shall this be supported or managed around?

sudo xxx upgrade give another other (download is okay): UpdateError: Could not find the required path in the archive but the issue is not #51.