Plain lambdas implemented, but not fully tested. No closures yet

tests/to_parse.krak

@@ -1,11 +1,10 @@
 import simple_print: *
-fun print_and_return(data: int): int {
-    println(data)
-    return data
-}
 fun main(): int {
     var v: fun(int):int
-    v = print_and_return
+    v = fun(data: int): int {
+        println(data)
+        return data
+    }
     println(v(7))
       // println(print_and_return(7))
     return 0