get rid of as many dependencies as possible (convert to imports)

[dpastoor]

See comment here on using Imports instead of depends

tl;dr package plays nicer and reduces chance of namespace conflicts (especially dplyr/plyr)

check dplyr description and source code or ggplot as an example of how can handle functions from other packages, etc. Key is using :: in front of all function calls.

So internally we'll want to convert df %>% summarize(...) to df %>% dplyr::summarize

[ronkeizer]

OK, wasn't aware of this issue. Will update

[billdenney]

This seems to be complete, and I think it can be closed.