Update version to 0.3.0

Author: hao.long

setup.py

@@ -10,7 +10,7 @@
     author='Long Hao',
     package_dir={'': 'src'},
     url='https://github.com/loonghao/photoshop_python_api',
-    version='0.2.1',
+    version='0.3.0',
     packages=find_packages('./src'),
     setup_requires=['setuptools-scm', 'setuptools>=40.0'],
     author_email='[email protected]',