fix Gitlab CI (#175)
* fix gitlab CI
* add to requirements.txt instead
* Remove asciidag from .test-conda-env-py3.ym
Co-authored-by: Andreas Klöckner <inform@tiker.net>
* fix gitlab CI
* add to requirements.txt instead
* Remove asciidag from .test-conda-env-py3.ym
Co-authored-by: Andreas Klöckner <inform@tiker.net>