cylc graph, cylc gui: prototype subgraphs
cylc graph, cylc gui: option to switch on cycle point subgraphs
#119: restore runahead limit
#119: auto-detect minimum task repetition
fix integer runahead limit for integer cycling
restore runahead behaviour in restart tests
modify test suites for runahead limit
attempt to rename 'tag' to 'point' or 'point_string'
attempt to rename 'ctime' to 'point' or 'point_string'
restore runahead limit to get-config test
Merge branch '119.iso8601-cycling' of github.com:cylc/cylc into 119.restore-runahead-limit
#996: fix bugs...
fix internal-outputs test
add new test function to test line-by-line membership
modify restart tests to use new contains_ok function
fix validate test error output
#983: first draft of runahead-by-num-cycle-points
update
#983: fix bugs in new runahead implementation
#983: update