Release punyverse 1.2 with better cross platform support

MANIFEST.in

@@ -5,4 +5,5 @@ include punyverse/world.json
 graft punyverse/assets
 include punyverse/shaders/*.glsl
 include punyverse/*.c
+include punyverse/*.h
 exclude punyverse/*.pyx

punyverse/_cyopengl.pxi

@@ -1,15 +1,4 @@
-IF UNAME_SYSNAME == "Windows":
-    cdef extern from "windows.h":
-        pass
-
-IF UNAME_SYSNAME == "Darwin":
-    cdef extern from "OpenGL/gl.h":
-        pass
-ELSE:
-    cdef extern from "GL/gl.h":
-        pass
-
-cdef extern from *:
+cdef extern from "glwrapper.h":
     ctypedef unsigned int   GLenum
     ctypedef unsigned char  GLboolean
     ctypedef unsigned int   GLbitfield

punyverse/glwrapper.h

@@ -0,0 +1,9 @@
+#ifdef _MSC_VER
+#   include <windows.h>
+#endif
+
+#ifdef __APPLE__
+#   include <OpenGL/gl.h>
+#else
+#   include <GL/gl.h>
+#endif

setup.py

@@ -112,7 +112,7 @@ else:
 
 setup(
     name='punyverse',
-    version='1.1',
+    version='1.2',
     packages=['punyverse'],
     package_data={
         'punyverse': [