Cw2

Public Release as found on pip

Long overdue as we forgot to mark a Github release accompanying the pip release.

What's Changed
* Beta by LiXiling in https://github.com/ALRhub/cw2/pull/52
* Origin/horeka scheduler by pbecker93 in https://github.com/ALRhub/cw2/pull/53
* wandb jobnames are now more concise by OlegArenz in https://github.com/ALRhub/cw2/pull/54
* add logging interval in wandb as one optional parameter by BruceGeLi in https://github.com/ALRhub/cw2/pull/56
* add a feature of logging model from a local directory by BruceGeLi in https://github.com/ALRhub/cw2/pull/57
* created optional flag 'use_group_parameters' to enable Olegs parameter grouping. by PhilippDahlinger in https://github.com/ALRhub/cw2/pull/60
* Cleaned up the initialization method. by PhilippDahlinger in https://github.com/ALRhub/cw2/pull/61
* Fix WandBLogger for AbstractExperiment by Lucas-Florin in https://github.com/ALRhub/cw2/pull/62

New Contributors
* OlegArenz made their first contribution in https://github.com/ALRhub/cw2/pull/54
* Lucas-Florin made their first contribution in https://github.com/ALRhub/cw2/pull/62

**Full Changelog**: https://github.com/ALRhub/cw2/compare/v1.2.3...v2.0.0

New Features due to "popular" demand:
1. ablative option joins grid/list. This option can be freely combined with the other two and might help estimate the effect of a specific hyperparameter on its own. See https://github.com/ALRhub/cw2/blob/beta/doc/03_config.md#3121-ablative-parameter-search
2. Import of External YAML files. You can now create a full fledged inheritance tree with your experiment configurations. See https://github.com/ALRhub/cw2/blob/beta/doc/03_config.md#314-importing-external-yaml-files for a very short explanation.
3. Dead God(-Class). Due to these changes I performed the long overdue refactoring of the cw_config.py godlike class.

- change combined `grid` and `list` solution
- updated doc
- include simple tests for `grid` and `list`

Bugfix:
Problems with `grid` as the only keyword

Finally v1.0.0 is here. Mostly because I am bad with numbering and don't want to have 0.x.x going forward.

New Features:
- A more extensive user guide (some areas are still under construction)
- support both `grid` and `list` combinations in the same experiment
- `--multicopy` for threadsafe writing of experiment code and assets, e.g. for Mujoco Experiments

Also:
- refactoring of important backend modules
- various bug fixes and improvements
- probably multiple features which did not get their own dedicated release message.

+ Increased Logging Functionality
+ End experiments early by raising `cw_error.ExperimentSurrender`