[release] 1.8.0

Author: zsdonghao

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name="tensorlayer",
-    version="1.8.0rc",
+    version="1.8.0",
     include_package_data=True,
     author='TensorLayer Contributors',
     author_email='[email protected]',