I want to kindly inform you that the contexttimer package has GPL-3 license. As of my understanding of the GPL license, if you use it, you have to license your project under GPL-3.

Though, the Lavis project, which uses this component e.g. listed in requirements.txt is under BSD-3 Clause license. This might be a licensing risk for your team and project and I would like to kindly ask you, to look into it.

Regards,
Daniel Kiss
aiMotive Kft.