Added sha384.fun to std library and alot of fixes. (0.16.3)

play.fun

@@ -9,6 +9,8 @@
  * https://opensource.org/license/apache-2-0
  */
 
+include <strings.fun>
+
 fun foo()
   print("Have fun!")
   print("Having fun... forever.")
@@ -17,6 +19,8 @@ print("Typeof foo(): " + typeof(foo))
 
 print("Yay, the playground for having fun... ;)")
 
+print(string_to_bytes_ascii("Have Fun!"))
+
 number n = 23
 // Every type MUST be lowercase. Sint* must be sint*.
 print(n)