do more work with classes from pytypes.h (especially for STL container casting)
diff --git a/setup.py b/setup.py
index 17ef509..691a51a 100644
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,7 @@
     headers=[
         'include/pybind11/cast.h',
         'include/pybind11/complex.h',
+        'include/pybind11/descr.h',
         'include/pybind11/numpy.h',
         'include/pybind11/pybind11.h',
         'include/pybind11/stl.h',
@@ -57,11 +58,10 @@
 become an excessively large and unnecessary dependency.
 
 Think of this library as a tiny self-contained version of Boost.Python with
-everything stripped away that isn't relevant for binding generation. The whole
-codebase requires less than 3000 lines of code and only depends on Python (2.7
-or 3.x) and the C++ standard library. This compact implementation was
-possible thanks to some of the new C++11 language features (tuples, lambda
-functions and variadic templates). Since its creation, this library has
-grown beyond Boost.Python in many ways, leading to dramatically simpler binding
-code in many common situations.""",
-)
+everything stripped away that isn't relevant for binding generation. The core
+header files only require ~2.5K lines of code and depend on Python (2.7 or 3.x)
+and the C++ standard library. This compact implementation was possible thanks
+to some of the new C++11 language features (specifically: tuples, lambda
+functions and variadic templates). Since its creation, this library has grown
+beyond Boost.Python in many ways, leading to dramatically simpler binding code
+in many common situations.""")