v0.1.4
- remove deprecated GMMDataset
- the generating GMM returned by GMM_dataset is no correctly centered
- changing the fiend :todiscard to :non_numerical in the output dictionary. 

v0.1.3
- fixed a call to the deprecated DataFrames deletecols! function

v0.1.2
- fixed a bug in convert_categorical_features! (non-categorical columns were previously deleted during the conversion)
- renamed GMMDataset to GMM_dataset
- exporting lowrank_dataset
- DataDeps is restricted in compat to <v0.7.5 because of a bug with unpack in higher versions.
- updated some calls to CSV for which the syntax changed

v0.1.1
First version, API not stable.
