426f585a47 api: Run just check-api (Tobin C. Harding)
6cf90132bc io: Add traits (Tobin C. Harding)
Pull request description:
So that our `io` crate is not surprising it seems we should generally, unless there is a good reason not to, follow `std::io`.
Copy the derived trait implementations from `std::io` for `Cursor`, and `Sink`. `Take` is correct already, just `Debug`.
Done while investigating C-COMMON-TRAITS
ACKs for top commit:
apoelstra:
ACK 426f585a479ca20b7c3390c589b836f8726b9b03; successfully ran local tests
Tree-SHA512: 0fdacfa0295c36e9ee2bdffd5e649b923f48eeff7baa3afc99fda0836ae30b794610a176c0e76341a268c712baab51139355976c23913a0744692cd1e38a4d11