Deprecate features from open-mastr

[FlorianK13]

Discussion

Users that are affected by this deprecation can leave their comments in this issue.

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Should we think about adding a deprecation warning to the soap API features .download and .mirror? We could print the message that those features will not be maintained in the future. If people still use them, they should tell us in an Issue.

Explanation

Both functions are used to download large amount of data via the SOAP API. Since BNetzA has a bulk download for quite some time now, I don't think that we need to maintain this feature anymore.

@chrwm What do you think?

Todos

• [ ] State very prominently in documentation that these features are deprecated, maybe even in the sidebar
• [x] Delete tests for the deprecated features

[FlorianK13]

Currently mastr mirror tests are causing problems, so we should also delete those tests and rather focus our (limited) time on fixing and maintaining other parts of the code.

[FlorianK13]

This is merged on develop and will be released soon.

[nesnoj]

Leave open for user feedback