More comments and removed an orphaned import, ref https://github.com/python-caldav/caldav/commit/7878d65fa4553cf91dde26334e5794c0852613b5 and https://github.com/python-caldav/caldav/issues/52#issuecomment-489373018
More comments and removed an orphaned import, ref https://github.com/python-caldav/caldav/commit/7878d65fa4553cf91dde26334e5794c0852613b5 and https://github.com/python-caldav/caldav/issues/52#issuecomment-489373018

python-caldav/caldav