use py2-compatible way to check for section-existance in tsstats.config.load

* bump version to 0.10.2

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name='tsstats',
-    version='0.10.1',
+    version='0.10.2',
     author='Thor77',
     author_email='thor77@thor77.org',
     description='A simple Teamspeak stats-generator',

tsstats/config.py

@@ -36,7 +36,7 @@ def load(path=None):
     # use this way to set defaults, because ConfigParser.read_dict
     # is not available < 3.2
     for section, items in DEFAULT_CONFIG.items():
-        if section not in config:
+        if section not in config.sections():
             config.add_section(section)
         for key, value in items.items():
             config.set(section, key, str(value))