* add github action ci
* only one environment update call
* line break in echo did not work
* fix syntax
* fix version syntax
* switch to glpk
* reduce time from month to week
* list environment
* use new ipopt version
https://github.com/conda-forge/ipopt-feedstock/issues/55
* remove accidental additions
* request ipopt lower than 3.13.3
https://github.com/conda-forge/ipopt-feedstock/issues/64
* add badges and release notes
* add badge to readme and make ci.yaml cc-0
