ContaAzul/DateDSL — pull request #3 by caarlos0 (2014-06-18 20:14:12+00:00)
Title: Exact Weeks and Months beetween dates

Example:
2014-06-18 & 2014-05-27 have 2 elapsed weeks (1 completed and start
another), but only 1 complete week.

It's probably not the best implementation though... any sugestions?