upgrade to onnx_coreml 1.2 (#537)

Author: bhushan23

README.md

@@ -40,7 +40,7 @@ def convert(model,
             predicted_feature_name='classLabel',
             add_custom_layers=False,
             custom_conversion_functions={},
-            minimum_ios_deployment_target='12')
+            minimum_ios_deployment_target='13')
 ```
 
 ```

onnx_coreml/__init__.py

@@ -5,4 +5,7 @@
 
 from .converter import convert
 
+# onnx-coreml version
+__version__ = '1.2'
+
 __all__ = ['convert']

setup.py

@@ -1,9 +1,9 @@
 from setuptools import setup, find_packages
 from os import path
 import sys
+from onnx_coreml import __version__
 
-
-VERSION = '1.1'
+VERSION = __version__
 
 here = path.abspath(path.dirname(__file__))