Soil

Fixed
* Default state values are now deepcopied again.
* Seeds for environments only concatenate the trial id (i.e., a number), to provide repeatable results.
* `Environment.run` now calls `Environment.step`, to allow for easy overloading of the environment step
Removed
* Datacollectors are not being used for now.
* `time.TimedActivation.step` does not use an `until` parameter anymore.
Changed
* Simulations now run right up to `until` (open interval)
* Time instants (`time.When`) don't need to be floats anymore. Now we can avoid precision issues with big numbers by using ints.
* Rabbits simulation is more idiomatic (using subclasses)

Fixed
* CI/CD testing issues

Fixed
* Agents would run another step after dying.

Added
* Integration with MESA
* `not_agent_ids` parameter to get sql in history
Changed
* `soil.Environment` now also inherits from `mesa.Model`
* `soil.Agent` now also inherits from `mesa.Agent`
* `soil.time` to replace `simpy` events, delays, duration, etc.
* `agent.id` is not `agent.unique_id` to be compatible with `mesa`. A property `BaseAgent.id` has been added for compatibility.
* `agent.environment` is now `agent.model`, for the same reason as above. The parameter name in `BaseAgent.__init__` has also been renamed.
Removed
* `simpy` dependency and compatibility. Each agent used to be a simpy generator, but that made debugging and error handling more complex. That has been replaced by a scheduler within the `soil.Environment` class, similar to how `mesa` does it.
* `soil.history` is now a separate package named `tsih`. The keys namedtuple uses `dict_id` instead of `agent_id`.
Added
* An option to choose whether a database should be used for history

Fixed
* Pass the right known_modules and parameters to stats discovery in simulation
* The configuration file must exist when launching through the CLI. If it doesn't, an error will be logged
* Minor changes in the documentation of the CLI arguments
Changed
* Stats are now exported by default

Added
* read-only `History`
Fixed
* Serialization problem with the `Environment` on parallel mode.
* Analysis functions now work as they should in the tutorial