Update package version to 0.6.3

Author: gunesacar

setup.py

@@ -8,7 +8,7 @@
     name="tbselenium",
     description="Tor Browser automation with Selenium",
     keywords=["tor", "selenium", "tor browser"],
-    version="0.6.2",
+    version="0.6.3",
     long_description=long_description,
     long_description_content_type='text/markdown',
     url='https://github.com/webfp/tor-browser-selenium',