Add option for custom vessel performance classes

[gecoombs]

PolarRoute Pull Request

Date: 18/10/24
Version Number: 1.1.1

Description of change

Adds the option to specify a custom vessel class when initialising the vessel performance modeller (bypassing the vessel factory) to make prototyping new models simpler. Also fixes a couple of small bugs with existing vessel models (alr/plane).

Fixes #261

Testing

• [x] My changes result in all required regression tests passing without the need to update test files.

Test results: vessel_tests_181024.txt

Files changed:

polar_route/__init__.py
polar_route/vessel_performance/vessel_performance_modeller.py
polar_route/vessel_performance/vessels/abstract_alr.py
polar_route/vessel_performance/vessels/abstract_glider.py
polar_route/vessel_performance/vessels/abstract_plane.py
polar_route/vessel_performance/vessels/abstract_ship.py
polar_route/vessel_performance/vessels/abstract_uav.py
polar_route/vessel_performance/vessels/example_ship.py

Checklist

• [x] My code follows pep8 style guidelines.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have updated the documentation of the codebase where required.
• [x] My changes generate no new warnings.
• [x] My PR has been made to the 1.1.x branch (DO NOT SUBMIT A PR TO MAIN)