Version 3 Release Candidate 2

Now that CodeIgniter 4.1.5 is released (which includes Publisher) this library will have its initial production-ready release very soon.

Please read the new Upgrade Guide for help migrating versions.

What's Changed

• Refactor by @MGatner in #31
• Toolkit by @MGatner in #33
• Bundle Caching by @MGatner in #34
• Release Docs by @MGatner in #35

Full Changelog: v2.3.0...v3.0.0-rc.2