Needed to drop - azureblob backend - cache backend - qingstor backend - cachestats command - ncdu command
Now we need to check or ignore errors on fmt.Fprint* explicitly - previously errcheck just ignored them for us.
The purpose of this is to make it easier to maintain and eventually to allow the rclone backends to be re-used in other projects without having to use the rclone configuration system. The new code layout is documented in CONTRIBUTING.
