Engin

Added

- Dependency class now has a new attribute: `func_name`.

Changed

- Improved `engin-graph` output.
- The `module` attribute of dependencies has been renamed to `origin`

Fixed

- Options provided under the `options` on a Block now have the `block_name` set.

Added

- A package script, `engin-graph` for visualising the dependency graph.

Changed

- TypeId retains Annotations allowing them to be used to discriminate otherwise identical
types.

Fixed

- Engin now respects intended multiproviders behaviour instead of treating them as normal
providers and overwriting existing multiproviders for that type.
- `Engin.shutdown()` does not block if shutdown is called before startup, or after aborted
startup.

Added

- Docstrings for every public class, method and function.

Changed

- AssemblyError has been renamed to ProviderError.
- Lifecycle now supports synchronous Context Managers.

Changed

- Invocations, startups tasks and shutdown tasks are now all run sequentially.
- Improved error handling, if an Invocation errors, or a Lifecycle startup tasks errors
then the Engin will exit. Whilst errors in shutdown tasks are logged and ignored.
- Improved error messaging when Invocations or Lifecycle tasks error.
- Removed non-public methods from the Lifecycle class, and renamed `register_context` to
`append`.