Summary: adds a new rule that parses year intervals such as "1960 - 1961". see inline comments for heuristics.
Reviewed By: patapizza
Differential Revision: D25840835
fbshipit-source-id: 851a5b1c78440cbf065bf9f20a05c78d4967ea3c
Summary: Add an option to return latent time entities. This can be used when one is pretty certain that the input contains a datetime.
Reviewed By: patapizza
Differential Revision: D7254245
fbshipit-source-id: e9e0503cace2691804056fcebdc18fd9090fb181