Add often forgotten feature

Author: hynek

README.md

@@ -128,7 +128,7 @@ Please check out [*On The Core API Names*](https://www.attrs.org/en/latest/names
 
 On the tin, *attrs* might remind you of `dataclasses` (and indeed, `dataclasses` [are a descendant](https://hynek.me/articles/import-attrs/) of *attrs*).
 In practice it does a lot more and is more flexible.
-For instance it allows you to define [special handling of NumPy arrays for equality checks](https://www.attrs.org/en/stable/comparison.html#customization), or allows more ways to [plug into the initialization process](https://www.attrs.org/en/stable/init.html#hooking-yourself-into-initialization).
+For instance it allows you to define [special handling of NumPy arrays for equality checks](https://www.attrs.org/en/stable/comparison.html#customization), allows more ways to [plug into the initialization process](https://www.attrs.org/en/stable/init.html#hooking-yourself-into-initialization), and allows for stepping through the generated methods using a debugger.
 
 For more details, please refer to our [comparison page](https://www.attrs.org/en/stable/why.html#data-classes).