masp_note_encryption 3.0.4

# Changelog
All notable changes to this library will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this library adheres to Rust's notion of
[Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Changed
- MSRV is now 1.56.1.

## [0.1.0] - 2021-12-17
Initial release (of `zcash_note_encryption`).