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- Add Midwest PHP 2019 to Conferences

You can view the Pull Request on github:
<a href="https://github.com/php/web-php/pull/263" title="https://github.com/php/web-php/pull/263">https://github.com/php/web-php/pull/263</a>

Opened By: mwillbanks
Pull Request Description:
Not much more to say here, added Midwest PHP Conference 2019 to the conferences listing.