The `help` module is no longer needed, since `clap` handles that.
This meant that the re-exports of each command's `ABOUT` could be removed and
the `const`s can now be private.
The implementation of `Keystore` requires a particular layout and naming
of keys. This is a rather strong limitation. Lift it and allow
specifying an arbitrary path for the secret and public key.
As it is possible to derive the public key from the secret key, make
the public key in `Keystore` optional. Also allow constructing
`MemorySigner` can now be initialized without a public key, by
deriving it.
As a library crate, it is bad to return such generic errors.
To get there, errors from `inquire` are downcasted.
This allowed to clean up the public interface of `radicle-term`, so that
it does also not leak the `inquire::InquireError` in its public API.
Fintan Halpenny
Richard Levitte
Lorenz Leutgeb
Matthias Beyer