0.2.2
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* BioDataReader: substituted np.loadtxt with more robust
  (even if slower) np.genfromtxt
* Heatmaps do not cluster variables when a signature
  contains all variables
* Backporting to python 2.6
* Fixed 'show' option for l1l2_tau_choice.py
* Added ranges checks in RangesScaler class

0.2.1
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* Fixed bug with old numpy version (empty_like api)

0.2.0
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* First public release
