Add at testing.
Add testing for period based cycling.
Add --strict checking to validate tests.
cylc gui: improve network usage
cylc gui: fix null glbl case
cylc gui: simplify state summary update time
Merge remote branch 'upstream/master' into expand-battery-6
Test for adding dependencies to a task.
cylc gui: better handle for connection lost
Merge pull request #723 from arjclark/expand-battery-6

Expand battery 6
Merge pull request #722 from benfitzpatrick/cylc-gui.remote-updater-minimal-network

cylc gui: more efficient update communication