Prepare 0.11.1 release

Author: kbattocchi

README.md

@@ -45,10 +45,12 @@ For information on use cases and background material on causal inference and het
 
 # News
 
-**May 8, 2021:** Release v0.11.0, see release notes [here](https://github.com/Microsoft/EconML/releases/tag/v0.11.0)
+**May 18, 2021:** Release v0.11.1, see release notes [here](https://github.com/Microsoft/EconML/releases/tag/v0.11.1)
 
 <details><summary>Previous releases</summary>
 
+**May 8, 2021:** Release v0.11.0, see release notes [here](https://github.com/Microsoft/EconML/releases/tag/v0.11.0)
+
 **March 22, 2021:** Release v0.10.0, see release notes [here](https://github.com/Microsoft/EconML/releases/tag/v0.10.0)
 
 **March 11, 2021:** Release v0.9.2, see release notes [here](https://github.com/Microsoft/EconML/releases/tag/v0.9.2)

econml/__init__.py

@@ -26,4 +26,4 @@
            'dowhy',
            '__version__']
 
-__version__ = '0.11.0'
+__version__ = '0.11.1'