Add 'setup.py dev' alias

Runs 'setup.py develop' plus installs 'nose' and 'coverage'.

CHANGES.txt

@@ -5,6 +5,9 @@ CHANGES
 4.0.0 (unreleased)
 ------------------
 
+- Added 'setup.py dev' alias (runs ``setup.py develop`` plus installs
+  ``nose`` and ``coverage``).
+
 - Replaced deprecated ``zope.interface.implements`` usage with equivalent
   ``zope.interface.implementer`` decorator.
 

setup.cfg

+[nosetests]
+nocapture=1
+cover-package=zope.proxy
+cover-erase=1
+with-doctest=0
+where=src
+
+[aliases]
+dev = develop easy_install zope.proxy[testing]

setup.py

@@ -75,5 +75,8 @@ setup(name='zope.proxy',
           'setuptools'],
       include_package_data = True,
       zip_safe = False,
+      extras_require = {
+        'testing': ['nose', 'coverage'],
+      },
       **extra
       )