Org-roam-tree update: jit rendering, arbitrary search and more!

I've been picking away at my org-roam-tree package that displays org-roam backlinks in more orderly ways --- as expandable and collapsible trees grouping backlinks by their file of origin (or in other ways, you can build your own data structures if you want to). The biggest update is jit rendering, making it much snappier, but I've also added some things like arbitrary search of your roam directory, different sorts and backlink buffer anchoring (toggles roam following point with a menu button). Though for some reason github is refusing to render my README.org now --- anyone have any idea why? Of all the things I want to spend time debugging, github is the last one...