Bump version to v0.1.1 (#1326)

Summary:
Pull Request resolved: #1326

Bumping the version number in preparation for 0.1.1 release (with Python 3.9 support)

Reviewed By: neerajprad

Differential Revision: D33830741

fbshipit-source-id: 0f6484ced7a4aa26d19334a2c4d3c86f691c1774

Author: horizon-blue

src/beanmachine/__init__.py

@@ -3,4 +3,4 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
-__version__ = "0.1.0.post1"
+__version__ = "0.1.1"