#1008: more minimal start-up dependencies
Merge branch '119.iso8601-cycling' of github.com:cylc/cylc into 1008.start-up-back-comp-dep-tweak
Merge remote branch 'upstream/119.iso8601-cycling' into 1008.start-up-back-comp-dep-tweak
#1008: add graphing tests
#1008: add graph tests for cyclers suites
#1008: adjust tests for new start-up/async behaviour
#1008: remove debug statements
#1008: remove another debug statement
update isodatetime to 531cf79
update cylc for isodatetime
fix pre-initial test flakiness
cylc logging: respect utc mode
Merge pull request #1037 from benfitzpatrick/logging.respect_utc_mode

cylc logging: respect utc mode
Added a bracket omitted from recent change.
Merge pull request #1039 from hjoliver/bug-fix-gcylc

Added a bracket omitted from recent change.
Merge pull request #1036 from benfitzpatrick/isodatetime.update

Update isodatetime library
Merge pull request #1026 from benfitzpatrick/1008.start-up-back-comp-dep-tweak

#1008: more minimal start-up dependencies
Merge branch '119.iso8601-cycling' of github.com:cylc/cylc into 976.advanced-dependencies
update fixes and fix backwards comp restart test