Add weighted data set.
Add weighted accuracy.

...and adjusted interface of weighted dataset.
OneOfCDecoding can deal with single probabilities.
First version of AdaBoost.
Fix compilation errors
Add test case scaffold.
Implement (failing) test case.
Set training set.
Use another data set for test case.
Add python binding for AdaBoost.
Get weights of models.
Merge pull request #152 from AlexanderFabisch/adaboost

Adaboost