Add tasks for all the new languages

Task/Singleton/Lasso/singleton-1.lasso

@@ -0,0 +1,17 @@
+// Define the thread if it doesn't exist
+// New definition supersede any current threads.
+
+not ::serverwide_singleton->istype
+? define serverwide_singleton => thread {
+    data public switch = 'x'
+}
+
+local(
+    a = serverwide_singleton,
+    b = serverwide_singleton,
+)
+
+#a->switch = 'a'
+#b->switch = 'b'
+
+#a->switch // b

Task/Singleton/Lasso/singleton-2.lasso

@@ -0,0 +1,16 @@
+// Define thread level singleton
+
+define singleton => type {
+    data public switch = 'x'
+    public oncreate => var(.type)->isa(.type) ? var(.type) | var(.type) := self
+}
+
+local(
+    a = singleton,
+    b = singleton,
+)
+
+#a->switch = 'a'
+#b->switch = 'b'
+
+#a->switch // b