More todos in README

README.md

@@ -4,18 +4,29 @@ Development branch. Probably does not work.
 
 [👉 Discussion on github](https://github.com/pelletier/go-toml/discussions/471).
 
-## Todo
+## Must do
 
 - [ ] Unmarshal into maps.
 - [ ] Attach comments to AST (gated by parser flag).
 - [ ] Abstract AST.
-- [ ] Rewrite AST to use a single array as storage instead of one allocation
-      per node.
+- [ ] Support Array Tables
 - [ ] Support Date / times.
 - [ ] Support Unmarshaler interface.
 - [ ] Support struct tags annotations.
 - [ ] Benchmark!
 
+## Further work
+
+- [ ] Rewrite AST to use a single array as storage instead of one allocation per
+      node.
+- [ ] Provide "minimal allocations" option that uses `unsafe` to reuse the input
+      byte array as storage for strings.
+
+## Ideas
+
+- [ ] Allow types to implement a `ASTUnmarshaler` interface to unmarshal
+      straight from the AST?
+
 ## License
 
 The MIT License (MIT). Read [LICENSE](LICENSE).