what's going on inside the house? (a changelog)

revision 4: there’s now a thing in the footer
revision 3: just a bit more polish
- emoji tooltips now have a neat animation on hover rather than just sort of appearing and disappearing immediately
- pages can now have thumbnails that display in embeds
revision 2: just really comfy UX
- first thing you probably noticed: added indent guides (may require a modern browser due to usage of :has)
- added some nice animations
  - hovering over branches is now animated
  - when a branch is focused via a hyperlink, the background will now pulse in and out to grab your attention
    this replaces the previous dotted underline which my friends reported to be hard to spot
- added dates to branches (requires JavaScript)
  - JavaScript requirement due to dates being formatted in your system’s locale
  - right now these are invisible on the mobile layout because it’s unclear where they should be positioned
- added page titles (you can see them on this page!)
- fixed “hey expand me” chevrons sometimes shifting layout when a branch is expanded
  - yeah, these ones - like the one that just disappeared when you clicked on the branch above
- /b endpoint is now used for shorter links. it also generates OpenGraph metadata so that Your Favorite Messaging Platform can display the linked branch’s content
  - what’s left here is to add some more OpenGraph to do stuff like: thumbnails, default descriptions, and so on and so forth - but the seeds for that have already been planted
- internals: branches are now based on flexboxes rather than background images. this requires sending a bit more HTML, but the layout is a lot more stable as well as being easier to extend