Previously, the remote helper would not support the `--force-with-lease` option.
This change introduces this support and ensures that it works as intended.
Co-authored-by: Fintan Halpenny <fintan.halpenny@gmail.com>
Previously it was possible to create an issue with an empty description
(i.e. an empty "root" comment), and also to change it later to a
non-empty string, however it was not possible to clear it again.
