Update TODO with current info

TODO.md

@@ -4,6 +4,11 @@
 It's not out yet, and not everything has a beta release yet, but we should continue tracking the
 status of 4.0 and update our libraries as we can.
 
+Current status:
+- actix-webfinger on actix-web 4.0.0-beta.1
+- http-signature-normalization-actix on actix-web 4.0.0-beta.1
+- background-jobs on actix-rt 2.0.0
+
 ## Sled 1.0
 As of the time of writing, the official Sled 1.0 release date is ~~in two days~~ eventually. I'm
 not sure how much the API will change, but I can assume there will be changes around flushing and
@@ -32,20 +37,7 @@ Tasks:
     - this one is less clear because comments are tree-structures
 
 ## Submissions
-Right now, following doesn't do much of anything from a user perspective. A follower can view
-followers-only posts on the author's Profile, or on the Home Page, and following a remote profile
-enables that profile to federate new submissions to the local server.
-
-Followers-Only submissions also exist on the back-end, but it is not yet exposed in the UI.
-Originally, this was blocked on adding a select component to the toolkit, but that blocker has gone
-away.
-
-There's currently no mechanism for marking submissions as NSFW, or for choosing to show or hide NSFW
-conent on Hyaenidae. This is a problem for scenarios in which some users wish to post NSFW content
-while others wish not to see it.
-
 Tasks:
-- Expose a setting to show/hide NSFW content to the profile page
 - Add "Mark as Sensitive" to report actions
 - Ensure submission updates cannot override an administrator's "mark as sensitive" ruling
 - (potentially) expose an NSFW flag on profiles to both hide profile banner image, and to default