add some todo items

README.md

@@ -13,6 +13,14 @@ there's also a flake with a shell and package - if you know nix you know what to
 
 ## TODO
 
+- parser generator:
+    - [ ] handle section-lists (e.g. TimingPoints or HitObjects)
+    - [ ] learn and parse sliders
+    - [ ] rename macros to look better (CONFIG -> PARSE, etc.)
+    - [ ] get rid of STREAM_STRUCT_OPS - make the STRUCT and CONFIG macros generate stream ops themselves
+    - [ ] numbered lists and colors
+    - [ ] extract into standalone library with both native c and c++ support (?)
+
 ## license
 
 agpl3