Opening a release branch

These are the steps to start a new release branch once a group of stories are ready to be developed.

1. Checkout main branch
2. Fetch origin
3. Determine what's the next version number according to Semantic Versioning 2.0.0
4. Create a new branch with release- + the version number, for example: release-1.1.0
5. Edit the version number in the following files
   • For each version of Memory.toc
     • Title
     • Version
   • Memory.lua
     • MemoryCore.ADDON_VERSION
   • README.md
     • Create a new version line with ### yyyy.mm.dd - version x.y.z, replacing x.y.z with the version number
6. Commit those changes
7. Open a new release PR with the title Release x.y.z

This is the release branch for Memory x.y.z.

## Before merge

- [ ] Changelog contains all the release notes