- track GraphiQL new version via @dependabot
- automate GraphiQL integration glue adapting for new versions
- rework `example/warp_subscriptions` to support subscriptions in new GraphiQL
- remove `cargo-make` integration
- rework CI pipeline more granular and precise
- rework releasing process
- tune up project layout
- fill up new CHANGELOGs
Additionally:
- fix latest nightly/stable Rust inconsistencies