fix version numbers

Author: jhgoebbert

setup.py

@@ -5,7 +5,7 @@
 with open(path.join(HERE, 'README.md'), 'r', encoding = 'utf-8') as fh:
     long_description = fh.read()
 
-version='0.2.3'
+version='0.3.0'
 setup(
     name = 'jupyter-xprahtml5-proxy',
     version = version,
@@ -34,7 +34,7 @@
             'xprahtml5 = jupyter_xprahtml5_proxy:setup_xprahtml5',
         ]
     },
-    install_requires = ['jupyter-server-proxy>=1.4.0'],
+    install_requires = ['jupyter-server-proxy>=1.5.0'],
     include_package_data = True,
     zip_safe = False
 )