Update changelog

Author: spalladino

packages/cli/changelog.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## v2.7.0 - 2020-01-31
+## v2.7.0 - 2020-02-10
 
 ### Added
 - Generate typechain contract wrappers in a typescript project. ([#1285](https://github.com/OpenZeppelin/openzeppelin-sdk/pull/1285))

packages/lib/changelog.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## v2.7.0 - 2020-01-31
+## v2.7.0 - 2020-02-10
 
 ### Added
 - Support for processing ABIs in contract artifacts compiled with Solidity 0.6. ([#1362](https://github.com/OpenZeppelin/openzeppelin-sdk/pull/1362))