Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Upstream added some text, but our README is completely different.
  Kept our README unchanged.

db/post_migrate/20210616214135_remove_current_sign_in_ip_from_users.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class RemoveCurrentSignInIpFromUsers < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    safety_assured do
+      remove_column :users, :current_sign_in_ip, :inet
+      remove_column :users, :last_sign_in_ip, :inet
+    end
+  end
+end