Update parsers to allow updating list elements

[micaeljtoliveira]

Add a list subclass to handle updates of individual list elements in parsed config files.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (9246d9d) to head (6b5926a).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #41   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            8         8           
  Lines          431       451   +20     
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+ Hits           431       451   +20     

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[micaeljtoliveira]

@edoyango And here is another PR! Absolutely not urgent, so please review only when you have some time.

[edoyango]

LGTM!

If we were dealing with large trees, converting value to a list should probably be avoided e.g. if it's a generator. But I doubt that will be an issue in the foreseeable future.

[micaeljtoliveira]

@edoyango Thanks for having a look!

If we were dealing with large trees, converting value to a list should probably be avoided e.g. if it's a generator. But I doubt that will be an issue in the foreseeable future.

Yes, that's true, but our config files should never hold lists large enough for this to be an issue I think. Otherwise simply parsing those files will be very slow with the current code.