started removing KLib related code:

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

math/DrawList.h

@@ -4,7 +4,7 @@
 #include <vector>
 #include <random>
 
-#include <KLib/Assertions.h>
+#include "../Assertions.h"
 
 /**
  * add elements of a certain probability
@@ -72,7 +72,7 @@ public:
 		const auto tmp = std::lower_bound(elements.begin(), elements.end(), rndVal);
 
 		// sanity check
-		_assertFalse(tmp == elements.end(), "draw() did not find a valid element");
+		Assert::isFalse(tmp == elements.end(), "draw() did not find a valid element");
 
 		// done
 		return (*tmp).element;