Add tasks for all the new languages

Task/Forward-difference/Lasso/forward-difference.lasso

@@ -0,0 +1,16 @@
+#!/usr/bin/lasso9
+
+define forwardDiff(values, order::integer=1) => {
+  !#order ? return #values->asArray
+  local(result = array)
+  iterate(#values) => {
+    loop_count < #values->size ?
+      #result->insert(#values->get(loop_count+1) - #values->get(loop_count))
+  }
+  #order > 1 ? #result = forwardDiff(#result, #order-1)
+  return #result
+}
+
+local(data = (:90, 47, 58, 29, 22, 32, 55, 5, 55, 73))
+with x in generateSeries(0, #data->size-1)
+do stdoutnl(#x + ': ' + forwardDiff(#data, #x))