Feature Request: [Tags Using Multi-Select Fields, Similar Posts Preview]

Thank you so much for creating this! I had an idea for a feature that could be used for blog sites: using a multi-select field to create tags for a post, and populating a "Read More" section with posts that match those tags. The tags could also be used to filter posts on the homepage, and/or create menu headings. 

I'm still pretty new to React, so I'm not sure how to implement it manually. 