Add tasks for all the new languages

Task/Euler-method/SequenceL/euler-method.sequencel

@@ -0,0 +1,25 @@
+import <Utilities/Conversion.sl>;
+import <Utilities/Sequence.sl>;
+
+T0 := 100.0;
+TR := 20.0;
+k := 0.07;
+
+main(args(2)) :=
+	let
+		results[i] := euler(newtonCooling, T0, 100, stringToInt(args[i]), 0, "delta_t = " ++ args[i]);
+	in
+		delimit(results, '\n');
+
+newtonCooling(t) := -k * (t - TR);
+
+euler: (float -> float) * float * int * int * int * char(1) -> char(1);
+euler(f, y, n, h, x, output(1)) :=
+	let
+		newOutput := output ++ "\n\t" ++ intToString(x) ++ "\t" ++ floatToString(y, 3);
+		newY := y + h * f(y);
+		newX := x + h;
+	in
+			output when x > n
+		else
+			euler(f, newY, n, h, newX, newOutput);