joestelmach/natty — pull request #88 by dhirajbhandari (2014-09-23 06:55:15+00:00)
Title: Raj/4 digits as year

Parse four-digits as Year (YYYY) not time (HHmm)
For eg: treats '2014' as Year 2014 rather than Military Time 20:14
- changed DateParser.g to recognize 'formal_year_four_digits' (without the month component) as formal_date
- changed DateWalker.g to create 'explicit_year_only_date' from the above and made an alternative for date rule