Pypesto

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* Only compute FIM when sensitivities are available (194).
* Fix documentation build (197).
* Add support for pyswarm optimizer (198).
* Run travis tests for documentation and notebooks only on pull requests (199).

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* Update to AMICI 0.10.13, fix API changes (185).
* Start using PEtab import from AMICI to be able to import constant species (184, 185)
* Require PEtab>=0.0.0a16 (183)

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* Add logo (178).
* Fix petab API changes (179).
* Some minor bugfixes (168).

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* Support noise models in Petab and Amici.
* Minor Petab update bug fixes.

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* Several minor error fixes, in particular on tests and steady state.

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* Introduce AggregatedObjective to use multiple objectives at once.
* Estimate steady state in AmiciObjective.
* Check amici model build version in PetabImporter.
* Use Amici multithreading in AmiciObjective.
* Allow to sort multistarts by initial value.
* Show usage of visualization routines in notebooks.
* Various fixes, in particular to visualization.