update changelog and version

Author: vfu116

CHANGELOG.md

@@ -115,7 +115,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 * Initial Release
 
-[Unreleased]: https://github.com/civisanalytics/swagger-diff/compare/v1.1.2...HEAD
+[2.0.0]: https://github.com/civisanalytics/swagger-diff/compare/v1.1.2...v2.0.0
 [1.1.2]: https://github.com/civisanalytics/swagger-diff/compare/v1.1.1...v1.1.2
 [1.1.1]: https://github.com/civisanalytics/swagger-diff/compare/v1.1.0...v1.1.1
 [1.1.0]: https://github.com/civisanalytics/swagger-diff/compare/v1.0.5...v1.1.0

lib/swagger/diff/version.rb

@@ -1,5 +1,5 @@
 module Swagger
   module Diff
-    VERSION = '1.1.2'.freeze
+    VERSION = '2.0.0'.freeze
   end
 end