
  PyvtTbl
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  Python pivot table (contingency tables) with sqlite3 
  backend.

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  Author: Roger Lew
  Author email: rogerlew@gmail.com
  http://code.google.com/p/pyvttbl/updates/list
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  Change Log

  v 0.4.1.0
    - added Pyvttbl.to_dataframe method
    - fixed Anova so it can transform data in lists
    - fixed DataFrame.anova wrapper so 'SNK' can be specified as
      posthoc test

  v 0.4.0.2
    - fixed dependency issue with dictset and pystaggrelite3.
    - They should install automatically through easy_install.

  v 0.4.0.1
    - fixed issue 4 were column names or row labels could
      exceed pivot table with non-factorial data

  v 0.4.0.0
    - Finalized Tukey and SNK posthoc comparisons in Anova1way
    - Added posthoc power analyses in Anova, Anova1way, Ttest,
      ChiSquare1way, and ChiSquare2way

  v 0.3.6.7
    - fixed bug in anova.py that prevented output when subject 
      variable was not 'SUBJECT'
    - fixed tick label issue with interaction_plot

  v 0.3.6.6
    - fixed bug with interaction_plots with subplots

  ... see repo

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