Add `share_key` column to status table in preparation for letting folks generate/revoke links to view private posts.

app/models/status.rb

@@ -26,6 +26,7 @@
 #  content_type           :string
 #  tsv                    :tsvector
 #  curated                :boolean
+#  sharekey               :string
 #
 
 class Status < ApplicationRecord

db/migrate/20190415185302_add_sharekey_to_status.rb

@@ -0,0 +1,5 @@
+class AddSharekeyToStatus < ActiveRecord::Migration[5.2]
+  def change
+    add_column :statuses, :sharekey, :string
+  end
+end

db/schema.rb

@@ -641,6 +641,7 @@ ActiveRecord::Schema.define(version: 2019_05_19_130537) do
     t.string "content_type"
     t.tsvector "tsv"
     t.boolean "curated"
+    t.string "sharekey"
     t.index ["account_id", "id", "visibility", "updated_at"], name: "index_statuses_20180106", order: { id: :desc }
     t.index ["in_reply_to_account_id"], name: "index_statuses_on_in_reply_to_account_id"
     t.index ["in_reply_to_id"], name: "index_statuses_on_in_reply_to_id"