Updated setup to set status to alpha, added py39

Signed-off-by: Andreas Maier <andreas.r.maier@gmx.de>

setup.py

@@ -120,7 +120,7 @@ def read_file(a_file):
     # Keep these Python versions in sync with easy_vault/__init__.py
     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
     classifiers=[
-        'Development Status :: 2 - Pre-Alpha',
+        'Development Status :: 3 - Alpha',
         'Environment :: Console',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: Apache Software License',
@@ -133,6 +133,7 @@ def read_file(a_file):
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Topic :: Software Development :: Libraries :: Python Modules',
     ]
 )