huge commit

- worked on about everything
- grid walker using plugable modules
- wifi models
- new distributions
- worked on geometric data-structures
- added typesafe timestamps
- worked on grid-building
- added sensor-classes
- added sensor analysis (step-detection, turn-detection)
- offline data reader
- many test-cases

math/DrawList.h

@@ -47,6 +47,11 @@ public:
 		;
 	}
 
+	/** change the seed */
+	void setSeed(const uint64_t seed) {
+		gen.seed(seed);
+	}
+
 	/** reset */
 	void reset() {
 		cumProbability = 0;