Errors associated with updates in dplyr package

Hello, 

Some functions from the dplyr package have been updated since v 0.7.0, such that winScan is not able to run position windows. 

Errors I've received include: 
`group_by_()` was deprecated in dplyr 0.7.0.
Please use `group_by()` instead.

and 
`rename_()` was deprecated in dplyr 0.7.0.
Please use `rename()` instead.


Thanks in advance, 
Abby 