started removing KLib related code:

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

math/distribution/Logistic.h

@@ -0,0 +1,22 @@
+#ifndef LOGISTIC_H
+#define LOGISTIC_H
+
+
+namespace Distribution {
+
+	// https://de.wikipedia.org/wiki/Logistische_Verteilung
+	template <typename T> class Logistic {
+
+	public:
+
+		/** alpha = move the center, beta = slope */
+		static T getCDF(const T x, const T alpha, const T beta) {
+			return 1 / (1 + std::exp( -((x-alpha)/beta) ) );
+		}
+
+
+	};
+
+}
+
+#endif // LOGISTIC_H