Function flatten conflict with exported function flatten from DataFrames

[Greg-R]

v0.19.4 DataFrames did not export flatten. v0.20.0 exports flatten.
I am seeing this warning:

WARNING: both DataFrames and Iterators export "flatten"; uses of it in module Gadfly must be qualified

and then this error:

ERROR: UndefVarError: flatten not defined

Is this a problem in DataFrames or Gadfly?

[Mattriks]

That needs to be fixed in Gadfly, so that it's compatible with DataFrames v0.20.0. In the meantime, you'll need to use DataFrames 0.19.4:

]add DataFrames@0.19.4

[Greg-R]

Thank you, that eliminates the warning and error; my code is running to completion now.