* change db schema

docs/schema.sqlite3.sql

@@ -2,7 +2,8 @@ BEGIN TRANSACTION;
 
 CREATE TABLE "sites" (
   "id" INTEGER PRIMARY KEY NOT NULL,
-  "site" varchar(4) NOT NULL
+  "site" varchar(4) NOT NULL,
+  "captcha" int(1) NOT NULL DEFAULT 1
 );
 
 CREATE UNIQUE INDEX "sites_uniq" ON "sites" ("site");
@@ -24,6 +25,8 @@ CREATE TABLE "comments" (
   "seq"   int(11) NOT NULL,
   "date"  int(11) NOT NULL,
   "reply" int(11) NOT NULL DEFAULT 0,
+  "notify" int(1) NOT NULL DEFAULT 0,
+  "addr"  varchar(32)  NOT NULL DEFAULT '',
   "name"  varchar(255) NOT NULL DEFAULT '',
   "email" varchar(255) NOT NULL DEFAULT '',
   "text" text NOT NULL,