removed dependency on py.test

modified downgrade so that
migrate.py downgrade x works just like:
migrate.py downgrade --version=x

CHANGELOG

@@ -1,3 +1,9 @@
+0.5.0
+- SA 0.5.x support.
+- TODO:py.test is no longer used for testing.  (use nose)
+- Better Postgres support, especially for schemas.
+- modification to the downgrade command to simplify the calling (old way still works just fine)
+
 0.4.x
 - TODO: document changes
 

migrate/versioning/shell.py

@@ -89,6 +89,10 @@ def parse_args(*args,**kwargs):
     args=list(args)
     try:
         cmdname = args.pop(0)
+        if cmdname == 'downgrade':
+            if not args[0].startswith('--'):
+                kwargs['version'] = args.pop(0)
+               
     except IndexError:
         # No command specified: no error message; just show usage
         raise ShellUsageError(None)

setup.py

@@ -9,7 +9,7 @@ except ImportError:
 
 setup(
     name = "sqlalchemy-migrate",
-    version = "0.4.6",
+    version = "0.5",
     packages = find_packages(exclude=['test*']),
     include_package_data = True,
     description = "Database schema migration for SQLAlchemy",
@@ -19,8 +19,8 @@ Inspired by Ruby on Rails' migrations, Migrate provides a way to deal with datab
 Migrate extends SQLAlchemy to have database changeset handling. It provides a database change repository mechanism which can be used from the command line as well as from inside python code.
 """,
 
-    install_requires = ['sqlalchemy >= 0.3.10'],
+    install_requires = ['sqlalchemy >= 0.4'],
-    setup_requires = ['py >= 0.9.0-beta'],
+    setup_requires = [],
     dependency_links = [
         "http://codespeak.net/download/py/",
     ],