started removing KLib related code:

- assertions
- distributions
new helper methods
worked on stairs
worked on grid-walkers
worked on navigation

math/Distributions.h

@@ -0,0 +1,8 @@
+#ifndef DISTRIBUTIONS_H
+#define DISTRIBUTIONS_H
+
+#include "distribution/Normal.h"
+#include "distribution/Exponential.h"
+#include "distribution/Logistic.h"
+
+#endif // DISTRIBUTIONS_H