Added properties to return a collection of mirrors, beam splitters and spaces...

Added properties to return a collection of mirrors, beam splitters and spaces as part of a kat object
2 jobs for master in 0 seconds (queued for 1897 minutes and 22 seconds)
Name Stage Failure
failed
python_2 Test There is an unknown failure, please try again
No job log
failed
python_3 Test There is an unknown failure, please try again
No job log