Bump version to 1.8.0 (#329)

Author: yangaws

CHANGELOG.rst

@@ -2,8 +2,8 @@
 CHANGELOG
 =========
 
-1.8.0.dev
-=========
+1.8.0
+=====
 
 * bug-fix: removing PCA from tuner
 * feature: Estimators: add support for Amazon k-nearest neighbors(KNN) algorithm

README.rst

@@ -51,7 +51,7 @@ You can install from source by cloning this repository and issuing a pip install
 
     git clone https://github.com/aws/sagemaker-python-sdk.git
     python setup.py sdist
-    pip install dist/sagemaker-1.7.1.tar.gz
+    pip install dist/sagemaker-1.8.0.tar.gz
 
 Supported Operating Systems
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~

setup.py

@@ -23,7 +23,7 @@ def read(fname):
 
 
 setup(name="sagemaker",
-      version="1.7.2",
+      version="1.8.0",
       description="Open source library for training and deploying models on Amazon SageMaker.",
       packages=find_packages('src'),
       package_dir={'': 'src'},