mail-builder 0.4.4
================================
- Do not split UTF-8 characters between encoded-words (#41)
- Escape underscores for quoted printable encoding (#39) (#43)
- Fix `Content-Transfer-Encoding` auto-detection for single long lines (#44) (#45)

mail-builder 0.4.3
================================
- Fix: Duplicate semicolon in group addresses.

mail-builder 0.4.2
================================
- Fix: Add semicolon at the end of group addresses.

mail-builder 0.4.1
================================
- Fix: Try to avoid lines longer than 78 characters (#32)

mail-builder 0.4.0
================================
- Removed `ludicrous` feature, the Rust compiler is smart enough to optimize array lookups.

mail-builder 0.3.2
================================
- Made `gethostname` crate optional.

mail-builder 0.3.1
================================
- Added `MimePart::transfer_encoding` method to disable automatic `Content-Transfer-Encoding` detection and treat it as a raw MIME part.

mail-builder 0.3.0
================================
- Replaced all `Multipart::new*` methods with a single `Multipart::new` method.

mail-builder 0.2.4
================================
- Added "Ludicrous mode" unsafe option for fast encoding.

mail-builder 0.2.3
================================
- Removed chrono dependency.

mail-builder 0.2.2
================================
- Fix: Generate valid Message-IDs

mail-builder 0.2.1
================================
- Fixed URL serializing bug.
- Headers are stored in a `Vec` instead of `BTreeMap`.

mail-builder 0.2.0
================================
- Improved API
- Added `write_to_vec` and `write_to_string`.

mail-builder 0.1.3
================================
- Bug fixes.
- Headers are written sorted alphabetically.
- Improved ID boundary generation.
- Encoding type detection for `[u8]` text parts.
- Optimised quoted-printable encoding.

mail-builder 0.1.2
================================
- All functions now take `impl Cow<str>`.

mail-builder 0.1.1
================================
- API improvements.

mail-builder 0.1.0
================================
- Initial release.
