Add missing entries to `CHANGELOG.md`

[confused-Techie]

Requirements

• Filling out the template is required.

• All new code requires tests to ensure against regressions.

  • However, if your PR contains zero code changes, feel free to select the checkmark below to indicate so.

• [ ] Have you ran tests against this code?

• [X] This PR contains zero code changes.

Description of the Change

Just like it says on the tin. The changelog has unfortunately been neglected recently. This adds the missing important changes.