Changelog update.

CHANGELOG.md

@@ -5,7 +5,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased](https://github.com/alexdlaird/pyngrok/compare/4.2.1...HEAD)
 
-## [4.2.1](https://github.com/alexdlaird/pyngrok/compare/4.1.15...4.2.1) - 2020-10-11
+## [4.2.1](https://github.com/alexdlaird/pyngrok/compare/4.1.16...4.2.1) - 2020-10-12
 
 The next release, 5.0.0, contains breaking changes, including dropping support for Python 2.7. 4.2.x is meant to ease
 migration between 4.1.x and 5.0.0 and should not be pinned, as it will not be supported after 5.0.0 is released. To
@@ -17,9 +17,10 @@ Python 2.7 support is still needed, pin `pyngrok>=4.1,<4.2`.
 - [ngrok.connect()](https://pyngrok.readthedocs.io/en/4.2.1/api.html#pyngrok.ngrok.connect) added `return_ngrok_tunnel` to its args, which defaults to `False` for backwards compatibility. This will default to `True` in 5.0.0, and the flag will be removed.
 - [conf.get_default()](https://pyngrok.readthedocs.io/en/4.2.1/api.html#pyngrok.conf.get_default), replacing the need to directly reference `conf.DEFAULT_PYNGROK_CONFIG`, which will be removed in 5.0.0.
 
-## [4.1.15](https://github.com/alexdlaird/pyngrok/compare/4.1.13...4.1.15) - 2020-10-11
+## [4.1.16](https://github.com/alexdlaird/pyngrok/compare/4.1.13...4.1.16) - 2020-10-12
 ### Added
-- `refresh_metrics()` to [NgrokTunnel](https://pyngrok.readthedocs.io/en/4.1.15/api.html#pyngrok.ngrok.NgrokTunnel.refresh_metrics).
+- [ngrok.get_version()](https://pyngrok.readthedocs.io/en/4.1.16/api.html#pyngrok.ngrok.get_version) to get `ngrok` and `pyngrok` versions in a tuple.
+- `refresh_metrics()` to [NgrokTunnel](https://pyngrok.readthedocs.io/en/4.1.16/api.html#pyngrok.ngrok.NgrokTunnel.refresh_metrics).
 - Documentation improvements.
 - Logging improvements.