chore: prep v1.4.0

[thaddmt]

• [ ] briefly describe the changes in this PR
• [ ] write tests for all new functionality
• [ ] run npm run docs and commit changes to API.md
• [ ] update CHANGELOG.md with changes under main heading before merging

[wipfli]

Are you using MapLibre GL JS v2 at AWS now, @thaddmt?

[thaddmt]

@wipfli Yep we're workign on migrating everything over right now :)

[wipfli]

Beautiful