don't delete full crates from docs.rs when only a version was deleted #2163
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related to https://rust-lang.zulipchat.com/#narrow/stream/356853-t-docs-rs/topic/glium.20gone
where we delete all releases for a crate while only one or more releases were deleted.
This was coming at least from a bug in the crates-index-diff docs: https://docs.rs/crates-index-diff/latest/crates_index_diff/enum.Change.html where it also emits
Deleted
for a version-delete, not only a crate-delete.Draft PR for a fix: Byron/crates-index-diff-rs#38