HarlanH/DataFrames.jl — pull request #320 by dmbates (2013-07-12 15:02:25+00:00)
Title: Remove the model_frame and model_matrix methods.

Also, apply vector in model_response.

@johnmyleswhite Is it okay to remove the model_frame and model_matrix generics? In other words, do you have code that depends on them?