Ert

Enhancements
- Add black badge to README
- Run black on everything in CI
- Format all files
- Update badges

Bug fixes:
- Seperate Update creation from ensemble creation and link observation transformation

ERT3 Enhancements
- Move flake8 settings into .flake8 config
- Run flake on tests/ert3 during style testing
- Stop using single character variable names in tests
- Stop storing unused return values in tests
- Fix deprecated escape characteres
- Drop support for variables, input and ouput data in storage
- Pass data as records in ert3
- Introduce record data types
- Change SPE1 example to produce single vector records

* Add error if not response could be loaded for `MeasuredData`
* Fix test that was testing a (now fixed) bug i `libres`

**Improvements:**
- Refactor of Qt Graphical User Interface

Ert2
* Add obs_location property to misfits and corresponding test
* Turn monitor into a context manager
* Add failure event and use it in the legacy and prefect ensembles
* Push ensembles separarate from responses to new storage
* Load config close to ensemble evaluator evaluation
* Refactor data loading
* Use numpy_vector instead of deprecated method
* Fix snake_oil_field ert config
* Depecate loading functions
* Refactor plot api
* Black plot api
* Run test-data as a part of CI
* Remove the prefect option from ert
* Remove coefficient generation in Prefect Ensemble
* Use LocalDaskCluster to run local ensembles
* Prevent double startup of storage server

Ert3
* Add index and ppf to distributions
* Implement oat sensitivity algorithm
* Add ert3 support for sensitivity studies
* Change patch import in ert3 cli test
* Introduce experiment folder in workspace
* Add base distribution
* Fix Literal imports
* Run polynomial demo during CI
* Pass record by name during sensitivity experiments
* Add uniform polynomial experiments
* Remove trailing whitespace
* Break before binary operators
* Make lambda's into def's
* Bring style back
* Add reservoir example based on SPE1 and flow
* Include permability and well delay in template
* Add SPE1 design of experiment
* Add SPE1 sensitivity study
* Document the SPE1 example

Other
* Create CODE_OF_CONDUCT.md (1414)

Add `pyrsistent` to `setup.py`

- Exceptions module for ert3 workspace errors
- Unify code paths with and without monitoring
- Added release notes
- Create CONTRIBUTING.md
- Update CONTRIBUTING.md
- Refactor Storage API Server (https://github.com/equinor/ert/issues/1102, https://github.com/equinor/ert/issues/1116)
- Graceful exit if storage_server.json exists
- Clarify how rel paths in workflow are resolved
- Fix extraction.py's create_update
- Return empty list in create_observations when no obs are available
- Add --host setting to ert api
- Storage: Allow NaNs to be returned (https://github.com/equinor/ert/issues/1284)
- Fix for default tabs selection (https://github.com/equinor/ert/issues/1282)
- Correct spelling of modelling to British variant
- Storage: Move database to /tmp while using it (https://github.com/equinor/ert/issues/1309)
- Fist working iteration of prefect evaluator (https://github.com/equinor/ert/issues/1125)
- Make evaluator input files configurable
- Add ert3 (https://github.com/equinor/ert/issues/1309,
- Copy examples when running Jenkins CI
- Run flake8 on the ert3 module as part of CI
- Avoid unnecessary stack trace during `ert vis` (https://github.com/equinor/ert/issues/1306)
- Storage: Combine ParameterDefinition & Parameter