Changelog still lists dual licensing under Unreleased

[Muawiya-contact]

The Unreleased section says:

### Changed

- Relicensed from MIT OR Apache-2.0 to MIT only

### Added

- Dual MIT OR Apache-2.0 licensing with in-repo license texts

Both entries are in the same unreleased block, so it reads as adding dual licensing and removing it in one release. Since neither shipped, the Added line should just go, and the Changed line probably wants to be "Licensed under MIT" instead of describing a relicense nobody saw.

Keep a Changelog also puts Added before Changed, which the 0.1.0 section already follows.

CHANGELOG.md:9