New Slack channel for Learn development discussions

We now have a #meta-learn channel in SlackSlack Slack is a Collaborative Group Chat Platform The WordPress community has its own Slack Channel at for discussions specifically around development topics for The community site where WordPress code is created and shared by the users. This is where you can download the source code for WordPress core, plugins and themes as well as the central location for community conversations and organization. Note that non-development discussions should still happen in other channels, such as #training.