Discretizer (#8)

* Add better check in testKBins.py

* Add Discretizer base class for Both discretizers

* Refactor order of constructors init

BinDisc.h

@@ -2,6 +2,7 @@
 #define BINDISC_H
 
 #include "typesFImdlp.h"
+#include "Discretizer.h"
 #include <string>
 
 namespace mdlp {
@@ -10,22 +11,19 @@ namespace mdlp {
         UNIFORM,
         QUANTILE
     };
-    class BinDisc {
+    class BinDisc : public Discretizer {
     public:
         BinDisc(int n_bins = 3, strategy_t strategy = strategy_t::UNIFORM);
         ~BinDisc();
-        void fit(samples_t&);
-        inline cutPoints_t getCutPoints() const { return cutPoints; };
-        labels_t& transform(const samples_t&);
-        static inline std::string version() { return "1.0.0"; };
+        // y is included for compatibility with the Discretizer interface
+        void fit(samples_t& X_, labels_t& y) override;
+        void fit(samples_t& X);
     private:
         void fit_uniform(samples_t&);
         void fit_quantile(samples_t&);
         void normalizeCutPoints();
         int n_bins;
         strategy_t strategy;
-        labels_t discretizedData = labels_t();
-        cutPoints_t cutPoints;
     };
 }
 #endif