Anypytools

**Removed:**

- Removed an `--runslow` argument in pytest plugin api. This setting caused problem when the user defined it them self.

**Added:**

- Add an option to add pytest markers to in the AnyScript test files. This is done by setting `pytest_markers=["slow"]` in
in the header. It is the same as decorating Python tests with `pytest.mark.slow`.

**Added:**

- Add an option to the pytest plugin to set the `debug_mode` for the console application.

**Fixed:**

- Pytest plugin can now handle new error messages from the upcoming AnyBody Modeling System 7.2.
- Deprecation warnings from using abstract base classes in the Python collection module.

**Fixed:**

- Fix bug in pytest plugin when pytest-xdist is installed.

**Added:**

- Added an `logfile` argument to the `app.start_macro()` function. This allow for setting an
explicit name for a log file. If `start_macro()` runs muliple instances the logfile will have
the task number appended.
- Added `debug_mode` option to the `AnyPyProcess` class. This will the debug mode of the
console application (e.g. the `/deb ` flag).

**Fixed:**

- Fixed a problem with pytest plugin when the pytest-xdist plugin is missing.