Prepare release v1.14.0 (#787)

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## 1.14.0 (20 Feb 2020)
+
+Enhancements:
+* [#771][]: Optimize calls for disabled log levels.
+* [#773][]: Add millisecond duration encoder.
+* [#775][]: Add option to increase the level of a logger.
+* [#786][]: Optimize time formatters using `Time.AppendFormat` where possible.
+
+Thanks to @caibirdme for their contributions to this release.
+
 ## 1.13.0 (13 Nov 2019)
 
 Enhancements:
@@ -350,3 +360,7 @@ upgrade to the upcoming stable release.
 [#736]: https://github.com/uber-go/zap/pull/736
 [#751]: https://github.com/uber-go/zap/pull/751
 [#758]: https://github.com/uber-go/zap/pull/758
+[#771]: https://github.com/uber-go/zap/pull/771
+[#773]: https://github.com/uber-go/zap/pull/773
+[#775]: https://github.com/uber-go/zap/pull/775
+[#786]: https://github.com/uber-go/zap/pull/786