Increment version to v2.1.0 and add Python2.x deprecation warning (#458)

* Increment version and add Python2.x deprecation warning

Change test to actually test no warnings when on python3

flake8 compliant

* fix development status classifier

Author: neozenith

Diff for: setup.py

@@ -37,7 +37,7 @@ def run_tests(self):
 
 setup(
     name='vcrpy',
-    version='2.0.1',
+    version='2.1.0',
     description=(
         "Automatically mock your HTTP interactions to simplify and "
         "speed up testing"
@@ -52,7 +52,7 @@ def run_tests(self):
     license='MIT',
     tests_require=['pytest', 'mock', 'pytest-httpbin'],
     classifiers=[
-        'Development Status :: 4 - Beta',
+        'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
         'Intended Audience :: Developers',
         'Programming Language :: Python',

Diff for: tests/unit/test_vcr_import.py

@@ -0,0 +1,16 @@
+import sys
+
+
+def test_vcr_import_deprecation(recwarn):
+
+    if 'vcr' in sys.modules:
+        # Remove imported module entry if already loaded in another test
+        del sys.modules['vcr']
+
+    import vcr  # noqa: F401
+
+    if sys.version_info[0] == 2:
+        assert len(recwarn) == 1
+        assert issubclass(recwarn[0].category, DeprecationWarning)
+    else:
+        assert len(recwarn) == 0

Diff for: vcr/__init__.py

@@ -1,4 +1,6 @@
 import logging
+import warnings
+import sys
 from .config import VCR
 
 # Set default logging handler to avoid "No handler found" warnings.
@@ -9,6 +11,11 @@ class NullHandler(logging.Handler):
         def emit(self, record):
             pass
 
+if sys.version_info[0] == 2:
+    warnings.warn(
+        "Python 2.x support of vcrpy is deprecated and will be removed in an upcoming major release.",
+        DeprecationWarning
+    )
 
 logging.getLogger(__name__).addHandler(NullHandler())