Add missing logger handler
Raise exception if unknown data is in List of Values
Allow empty lines, raise exception if colon in value
Add "timestamp" to /v1/hosts/ response

"timestamp" shows the last datagramm time
Update Controller class test with timestamp checks
Log level changes
FIX: "?" in SDP value is allowed
Add missing logger handler
Raise exception if unknown data is in List of Values
Allow empty lines, raise exception if colon in value
Add "timestamp" to /v1/hosts/ response

"timestamp" shows the last datagramm time
Update Controller class test with timestamp checks
Log level changes
FIX: "?" in SDP value is allowed
test_sdp cleanup