Issues a warning when there are multiple MAKEINSTANCEs for a single
EVENT (since these are not possible in the current type system).
Refactors TLINK annotators so that they can run on TempEval 2013 data where the events and times to link are not known ahead of time
Adds first draft of TempEval 2013 evaluation
Merge branch 'master' of https://code.google.com/p/cleartk
Merge branch 'master' of github.com:tmills/cleartk-with-tree-kernels
Moved setting of combo operator so it doesn't screw up non-tree scoring.