Moved EntropyMDL code from to widget.
join_contingency for Entropy discretization: 3x-10x speedup.
Use explicit ordering when querying column types.
Travis: Test sql support.
Merge pull request #93 from astaric/travis

Run sql tests on Travis
join_contingency for Entropy discretization speedup with scipy: 30x for
large data sets.
Added documentation for EntropyMDL.
Fixed repeated imports.
EntropyMDL: faster entropy computation.
Cache and keep track of boundingRect.

This is to avoid possible dead pointers in QGraphicsScene's bsp tree
index (a possible fix for #79).
Fixed an error in owdatasampler.py

Fixes #91
Fixed EntropyMDL to set limits as in the article.
Added parameter "force" to EntropyMDL.
Merge pull request #94 from markotoplak/entropydisc

EntropyMDL in Orange.feature.discretization
Added mingw setup command.
Change attributes on AttributeList input signal.
Revised short description and some labels in the user interface.
Added a ModelMap Projection Rank widget.
Removed print-outs.
Removed values changed.