major features update

migrations/demo.db/0002_journal-entry-tables.sql

@@ -0,0 +1,13 @@
+create table if not exists journal_entries (
+  id integer primary key autoincrement,
+  value text not null,
+  date text not null
+);
+
+create table if not exists contact_mentions (
+  entry_id integer not null references journal_entries(id) on delete cascade,
+  contact_id integer not null references contacts(id) on delete cascade,
+  input_text text not null,
+  byte_range_start integer not null,
+  byte_range_end integer not null
+);