alisp.org: update todos

alisp.org

@@ -45,7 +45,7 @@ i.e. no parsing.
 *** DONE Design what a "parser function" would look like
 The general function is something like ~stream -> T | Err~.  What
 other state do we need to encode?
-*** WIP Write a parser for integers
+*** DONE Write a parser for integers
 *** DONE Write a parser for symbols
 *** DONE Write a parser for lists
 *** TODO Write a parser for strings