Started adding timezone support

setup/sql/upgrade-00005.sql

@@ -0,0 +1,17 @@
+# Header section
+# Define incrementing schema version number
+SET @schema_version = '5';
+
+-- {{#each tables.subscription}}
+
+    # Adds new column 'tz' to subscriptions table
+    # Indicates subscriber time zone, use UTC as default
+    ALTER TABLE `{{this}}` ADD COLUMN `tz` varchar(100) CHARACTER SET ascii DEFAULT NULL AFTER `opt_in_country`;
+    CREATE INDEX subscriber_tz ON `{{this}}` (`tz`);
+
+-- {{/each}}
+
+# Footer section
+LOCK TABLES `settings` WRITE;
+INSERT INTO `settings` (`key`, `value`) VALUES('db_schema_version', @schema_version) ON DUPLICATE KEY UPDATE `value`=@schema_version;
+UNLOCK TABLES;

setup/sql/upgrade-template.sql

@@ -1,6 +1,6 @@
 # This file is a handlebars template
 # To modify several similar tables at once use (replace [] with {}):
-#   [[#each tablename]] ALTER TABLE `[[this]]` ... [[/each]]
+#   [[#each tables.tablename]] ALTER TABLE `[[this]]` ... [[/each]]
 # NB! as this is a handlebars file, then remember to escape any template sequences
 
 # Header section