- 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
* Update compile fail tests for latest Rust
The messages appear to have changed on nightly
* Fix tests depending on fixture data
* Fix more integration test paths
* Fix doc warnings