check Experiment, Screen and EyeTracker for equality

[dkrako]

Description of the problem

There are a lot of places in our source and test code that manually checks for equality of Experiment, Screen or EyeTracker objects.

Description of a solution

Create a method like Experiment.__eq__(Experiment: other) -> bool with corresponding methods for the Screen and EyeTracker classes.

Minimum acceptance criteria

• Experiment.__eq__(Experiment: other) -> bool
• Screen.__eq__(Screen: other)
• EyeTracker.__eq__(EyeTracker: other)

Context

Here's some further information for reference: https://stackoverflow.com/questions/390250/elegant-ways-to-support-equivalence-equality-in-python-classes