Small cobrapy compatibility fix

Merge devel into master (#284)

* Replace Travis with github actions (#270)

* chore: replace travis with gh actions

* test: replace TRAVIS env var with CI

* test: run CI only linux for now

* chore: add release gh action

* docs: add docs gh action

* fix: get syntax and deps right

* chore: merge docs with release action

* fix: install openbabel on CI

* refactor: merge release and main actions

* fix: use secrets for publishing to pypi

* chore: install CPLEX on CI py3.6

* fix: typo

* fix: extract cplex properly

* chore: schedule CI run every month

* Fix plotting (#272)

* fix: update escher everywhere

* docs: explain how to work in jupyterlab

* style: apply flake8

* docs: format missing code block properly

* fix: remove docstring typo

* Refactor bounds behaviour (#273)

* fix: update escher everywhere

* docs: explain how to work in jupyterlab

* style: apply flake8

* docs: format missing code block properly

* refactor: adopt new bounds behavior https://github.com/opencobra/cobrapy/issues/793

* style: improve readability

* docs: add badge to binder (#274)

* Docs enhance (#276)

* fix: update escher everywhere

* docs: explain how to work in jupyterlab

* style: apply flake8

* docs: format missing code block properly

* docs: show favicon

* docs: regenerate tutorial notebooks

* style: use :py: in API links

Co-authored-by: Moritz E. Beber <[email protected]>

* style: remove WARNING

Co-authored-by: Moritz E. Beber <[email protected]>

* fix: reconcile blocked with excluded reactions in OptKnock

* chore: unpin optlang

* chore: update pickles

Co-authored-by: Jorge Carrasco <[email protected]>
Co-authored-by: Moritz E. Beber <[email protected]>