changes from the laptop

- some should be the same as previous commit (sorry!)
- some should be new: LINT checks, ...?

tests/grid/TestWalk.cpp

@@ -101,7 +101,7 @@ TEST(Walk, DISABLED_plot) {
 	std::normal_distribution<float> dWalk(0.3, 0.3);
 	std::normal_distribution<float> dTurn(0.3, 0.3);
 
-	K::GnuplotSplotElementPoints pStates; pStates.setColorHex("#880000");
+	K::GnuplotSplotElementPoints pStates; pStates.getColor().setHexStr("#880000");
 
 	// setup starting states
 	std::vector<GridWalkState<GP>> states;