Profiled and improved performance of the event calendar. Made it private in order not to commit to early.

Reworked the `uom` integration: namespaces for all quantities and an extension trait for easier unit construction. Quantities are pushed into a separate macro for easier updating to later versions of `uom`.

Made the derive for `Config` rely on the definition of `DefaultConfig` in core, rather than just assuming its `(f64, (), ())`. This allows changing it later without having to touch the meta crate.

Cleaned up the root module of the library to prevent the IDE from suggesting private `use` directives in user projects.

Exporting the `uom` crate now, to allow the user to make themselves dependent on the version used here. Slightly tweaked the prelude.

Moved the benchmark results out of the target directory, since this one gets deleted on `cargo clean`.

Breaking changes to the naming: Process -> Agent, Fiber -> Job, Task -> Continuation. Updated the docs.

Cleaned up dependencies and binaries, improved examples in the documentation, renamed `Once` to `Lease` and `NFT` to `Ephemeral`.

Added the - very basic - Clock example and factored the performance benchmarks into separate functions. Added a benchmark for compilation times of ODEMx, but it's not really usable yet.

Migrated to the 2024 edition. Fixed the control macro not working due to temporary tail expression scope being shortened in the new edition.