message: changelog: 1.4.0
diff: +1.4.0 (2020-10-11)
  +==================
  +This releases has a few minor documentation fixes as well as some very minor
  +API additions. The MSRV remains at Rust 1.28 for now, but this is intended to
  +increase to at least Rust 1.41.1 soon.
  +
  +This release also adds support for OSS-Fuzz. Kudos to
  +[@DavidKorczynski](https://github.com/DavidKorczynski)
  +for doing the heavy lifting for that!
  +
  +New features:
  +
  +* [FEATURE #649](https://github.com/rust-lang/regex/issues/649):
  + Support `[`, `]` and `.` in capture group names.
  +* [FEATURE #687](https://github.com/rust-lang/regex/issues/687):
  + Add `is_empty` predicate to `RegexSet`.
  +* [FEATURE #689](https://github.com/rust-lang/regex/issues/689):
  + Implement `Clone` for `SubCaptureMatches`.
  +* [FEATURE #715](https://github.com/rust-lang/regex/issues/715):
  + Add `empty` constructor to `RegexSet` for convenience.
  +
  +Bug fixes:
  +
  +* [BUG #694](https://github.com/rust-lang/regex/issues/694):
  + Fix doc example for `Replacer::replace_append`.
  +* [BUG #698](https://github.com/rust-lang/regex/issues/698):
  + Clarify docs for `s` flag when using a `bytes::Regex`.
  +* [BUG #711](https://github.com/rust-lang/regex/issues/711):
  + Clarify `is_match` docs to indicate that it can match anywhere in string.
  +
  +
  1.3.9 (2020-05-28)
  ==================
  This release fixes a MSRV (Minimum Support Rust Version) regression in the
  