AggregatedObjective: objective-specific kwargs for call_unprocessed

[Theorell]

It should be possible to pass kwargs to AmiciObjective. At the moment, if you make an AggregatedObjective with a prior (which takes kwargs), and an AmiciObjective, trying to use the kwargs will lead to an error.

[codecov-commenter]

Codecov Report

Merging #1068 (7c0463b) into develop (160c2a8) will decrease coverage by 3.31%.
The diff coverage is 88.01%.

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@@             Coverage Diff             @@
##           develop    #1068      +/-   ##
===========================================
- Coverage    88.16%   84.86%   -3.31%     
===========================================
  Files           79      147      +68     
  Lines         5257    11399    +6142     
===========================================
+ Hits          4635     9674    +5039     
- Misses         622     1725    +1103     

Impacted Files	Coverage Δ
pypesto/engine/mpi_pool.py	0.00% <0.00%> (ø)
pypesto/objective/amici/__init__.py	100.00% <ø> (ø)
pypesto/objective/amici/amici.py	85.15% <ø> (ø)
pypesto/objective/amici/amici_calculator.py	86.36% <ø> (ø)
pypesto/objective/amici/amici_util.py	81.53% <ø> (ø)
pypesto/objective/base.py	87.62% <ø> (-0.10%)	⬇️
pypesto/objective/finite_difference.py	94.16% <ø> (ø)
pypesto/objective/function.py	94.91% <ø> (+19.91%)	⬆️
pypesto/objective/jax/__init__.py	100.00% <ø> (ø)
pypesto/objective/jax/base.py	91.56% <ø> (ø)
... and 137 more

[dilpath]

Looks reasonable but might be problematic to assume that keyword arguments between objectives are comparable.

Instead, we could change AggregatedObjective.call_unprocessed to accept a keyword argument kwargs_list, which is one dictionary of keyword arguments per objective. **kwargs can still be used for all objectives as before.

I made this suggestion in a commit, feel free to revert if undesired.

[dweindl]

Makes sense to have it objective-specific 👍

[FFroehlich]

👍