- Find nearest orchestra.yml in parent directories (docker-compose style)
- Allow defining multiple folders to look for services via `stacks` in `orchestra.yml`
  Default behavior is preserved if `stacks` is not provided, otherwise add `""` or `"."`
  to add the root folder as part of the search. This is useful in a monorepo where
  services are split in different "stacks" or "products".
  A specific stack can be acted upon by just specifying its folder, for exemple
  running `orchestra ps core` will return all serviecs found in the `core` subfolder
  if it was specified under `stacks` in `orchestra.yml`

- Bash completion was updated to init services itself as `.Before` is no longer called
  by github.com/urface/cli since v1.22.10.
- Added fish completion
- Add a `.` alias in arg parsing allowing a stack or a service to be acted upon
  when the user is currently in its directory.