Add tasks for all the new languages

Task/Caesar-cipher/Wortel/caesar-cipher.wortel

@@ -0,0 +1,18 @@
+@let {
+  ; this function only replaces letters and keeps case
+  ceasar &[s n] !!s.replace &"[a-z]"gi &[x] [
+    @vars {
+      t x.charCodeAt.
+      l ?{
+        && > t 96 < t 123 97
+        && > t 64 < t 91 65
+        0
+      }
+    }
+    !String.fromCharCode ?{
+      l +l ~% 26 -+ n t l
+      t
+    }
+  ]
+  !!ceasar "abc $%^ ABC" 10
+}