git: Update radicle-surf to 0.21
This also changes the serialization of Diff and FileDiff, which allows us to keep the sorting implemented by git2
And improves the binary detection by looping over the git2 diff
This also changes the serialization of Diff and FileDiff, which allows us to keep the sorting implemented by git2
And improves the binary detection by looping over the git2 diff
LGTM
Update radicle-surf to 0.21
Rebase and squash to v0.21 directly
Rebase.