License
There are several components used (but included directly) with slightly different licences.
Summary
Open source, and may be employed as you wish. Licensing cannot change. Some parts require that distributing derived software must also offer the source code be available
Details
owlogger.py owpost.py
MIT license -- basically code may be used for any purpose, but should stay under that license and offers no warrantees.
air-datepicker
pyownet
LGPL-3.0 -- read the details here.
So the licensing is quite permissive. Treating the entirety as LGPL-3.0 is probably the safest course, but the individual components are licensed as stated above.