Reorganized the standard library a little more, moved the initialization code for the standard environment into a function. Making way for more organization changes to come

bin/main.ml

@@ -1,9 +1,12 @@
 open Lisp.Ast;;
 open Printf;;
 open Lisp;;
+open Env;;
 open Eval;;
 open Read;;
 
+let () = InterpreterStdlib.init_default_env ()
+
 let rec repl env c =
   let () = printf ">>> "; Out_channel.flush Out_channel.stdout; in
   match In_channel.input_line c with