While running `cargo-semver-checks`, there was an issue that was surfaced
regarding `serde(into)`, `serde(try_from)` and `schemars(transparent)` being
used, and they are incompatible.
This appeared to be a semver issue, on the side of `schemars`, since the issue
would only appear when adding `radicle` as a fresh dependency. The intuition for
this is that once `schemars` was updated locally, the same error appeared when
attempting to build the `radicle` crate.
To avoid this, `schemars` provides a `!` operator for the macro[^0]:
> You can also “unset” serde attributes by including them with a ! prefix in a
> schemars attribute, which will make schemars ignore the corresponding serde
> attribute item
[^0]: https://docs.rs/schemars_derive/latest/schemars_derive/derive.JsonSchema.html#attributes
The `Review::summary` was limited in behaviour, since it was only an
`Option<String>`.
The field is now changed to `NonEmpty<Edit>` so that it can enable an edit
history, as well as being able to supply embeds as part of the text.
`Reactions` are also introduced to `Review` and, necessarily, introducing an
`Action::ReviewReact`.
Note that some machinery was added under `actions` and `encoding` to enable
backwards-compatibility.
For `actions`, a new `ReviewEdit` is introduced to keep
track of the different versions of editing actions – supporting the old actions
while also introducing the new variant.
For `encoding`, the machinery exploits the fact that an `Option<String>` can be
converted into a `NonEmpty<Edit>` given that an `ActorId` and `Timestamp` are
available, and that `None` can be converted into an empty string. The struct
`patch::Review` now deserializes via this `encoding::review::Review` type and,
importantly, preserves backwards-compatibility.
Changes for the `Canonical` type:
- Reorder arguments so that `delegates` and `threshold` are grouped
after `refname`
- Add `Canonical::is_empty` to detect when `Canonical` was constructed
with no tips
- Consume `Canonical` when calling `Canonical::quorum` to indicate
that it should be the final step
The Canonical type is generally constructed with the threshold, needed
for the quorum computation, in scope. To make it easier to use and
encapsulate its functionality, it now holds the threshold as an
additional field.