feat(journal): update end of week 5

journal/week5.typ

@@ -20,3 +20,25 @@
   - Issues:
     - `GetExpr` can reference either a property on a `ComplexType` or a method.
     - A method (or function) can be overloaded, for example ```py list[T].__getitem__(int) -> T``` and ```py list[T].__getitem__(slice) -> list[T]```
+
+#day(4)
+
+- Rework complex types: extension type, combine properties and methods as members
+
+#day(5)
+
+- Implement member lookup
+- Adapt operations
+- Handle generic members
+
+#day(6)
+
+- Redefine builtins with members
+- Tidy up
+- Add unary operations and subscripts
+
+#day(7)
+
+- Resolve overloaded functions
+- Add slices
+- Add simple code generator