Current situation

The naming of Job.context regularly leads to confusion, because the context parameter of job/error/handler callbacks has the same name. Accessing that value in a job callback as context.job.context can be even more confusing.

Proposed solution

Rename Job.context to Job.data and correspondingly also rename the context argument of JobQueue.run_* to data.

ToDo

A PR for this should

• rename the parameters of the JobQueue methods and the attribute of the Job class
• update the docstrings accordingly
• add .. versionchanged:: 20.0 directives to the documentation
• Update the unit tests accordingly. Letting the test suit run once to see which tests fail after the update should probably already find most tests that need adaption.
• Check if the timerbot.py example needs to be updated.

Additional Info

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