#119: implement string-based cycling classes
#119: fix bugs from previous commit
update
#119: fixes following update
#119: add nonzero comparison, fix isodatetime bug
#119: add example suite
cylc/cylc#119: start documentation and tests
cylc/cylc#119: fix new cyclers test battery
swap initial and final tests
update isodatetime; multiweekly fix
#119: implement feedback
#119: alter 'cycle' to 'cycle point'
alter new test_header file to be a symlink
Merge pull request #937 from benfitzpatrick/iso8601-cycling

#119: fixes and some tests
Removed obsolete task instance counting.
Don't check tasks against stop cycle at start-up.
Separate runahead pool from main task pool.
Moved orphan handling to task_pool.
Moved no_active_task test to task_pool.
Moved hold-all-tasks to task_pool.