v0.3.1

[ecton]

Changed

• BorrowedRange now exposes its fields as public. Without this, there was no
  way to implement BorrowByteRange outside of this crate.
• This crate now explicitly states its minimum supported Rust version (MSRV).
  The MSRV did not change as part of this update. It previously was not
  documented.

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This discussion was created from the release v0.3.1.