major features update

migrations/users.db/01_create-users.sql

@@ -0,0 +1,5 @@
+create table if not exists users (
+    id integer primary key autoincrement,
+    username not null unique,
+    password not null
+);

migrations/users.db/02_add-ephemeral.sql

@@ -0,0 +1,5 @@
+alter table users add column
+    ephemeral boolean not null default false
+;
+
+update users set ephemeral = false where ephemeral is null;