Thanks to the fact that Obsidian just uses plain text documents stored in the Finder, it is possible to use third-party tools to accomplish some things without having to wait for a plugin. I had earlier requested a feature that would auto-file documents to a sub-folder based on certain keywords, but then I realized that this is already possible using Hazel. I have created a Hazel rule to watch the top level of my Obsidian vault and look for any documents with the keyword #people in them. It will automatically move these documents to my /people subfolder. So far it seems to work perfectly.