fix: prevent exceptions in callbacks from causing deadlocks

[btasker]

Closes #558

Proposed Changes

Introduces two levels of deadlock protection

• Traps exceptions thrown by callbacks and logs a warning
• Implements a maximum wait time during close()

The second change involves the introduction of a new WriteOption: max_close_wait. The default is set to 5 minutes, but can be overriden in the same manner as other write options.

Note: in order to allow the failure to be tested safely, pytest-timeout has been added as a test dependency.

Checklist

• [x ] CHANGELOG.md updated
• [x ] Rebased/mergeable
• [x ] A test has been added if appropriate
• [x ] pytest tests completes successfully
• [x ] Commit messages are conventional
• [x ] Sign CLA (if not already signed)