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-This document describes how to upgrade the application and perform eventual database schema upgrades from an older release to a newer release.
-
-For example, if you are coming from `v2.1.2`, you need to perform all database schema upgrades *after* `v2.1.2` (in sequential order) till the release to which you want to upgrade.
-
-## Release `v2.4.1` (coming from `v2.4`)
-For upgrading to this release, a manual database schema upgrade is required. Please execute the following SQL commands inside your blogs database.
-
-~~~sql
-ALTER TABLE `page` MODIFY `argv` VARCHAR(250);
-ALTER TABLE `post` MODIFY `argv` VARCHAR(250);
-ALTER TABLE `user` MODIFY `argv` VARCHAR(250);
-~~~
-
-## Release `v2.4` (coming from `v2.3` or `v2.3.1`)
-For upgrading to this release, a manual database schema upgrade is required. Please execute the following SQL commands inside your blogs database.
-
-**NOTICE:**  
-This upgrade requires MariaDB `>= 10.0.5` or MySQL `>= 5.6`!
-
-~~~sql
-ALTER TABLE `post` ENGINE=InnoDB;
-ALTER TABLE `post` DROP INDEX `body`;
-ALTER TABLE `page` ADD FULLTEXT KEY `search` (`name`, `body`);
-ALTER TABLE `post` ADD FULLTEXT KEY `search` (`name`, `body`);
-ALTER TABLE `post` ADD CONSTRAINT `post_user` FOREIGN KEY (`user`)
-	REFERENCES `user` (`id`) ON DELETE CASCADE ON UPDATE CASCADE;
-~~~
-
-## Release `v2.3` (coming from `v2.2` or `v2.2.1`)
-For upgrading to this release, you need to replace the following strings inside your *customized* theme templates (if you have any).
-
-Search for:  `$Language->template`  
-Replace with: `$Language->text`
-
-## Release `v2.2` (coming from `v2.1.2`)
-For upgrading to this release, you need to replace the following strings inside your *customized* theme templates (if you have any).
-
-Search for:  `['ID']`  
-Replace with: `['ATTR']['ID']`
-
-## Release `v2.1.2` (coming from `v2.0`, `v2.1` or `v2.1.1`)
-For upgrading to this release, a manual database schema upgrade is required. Please execute the following SQL commands inside your blogs database.
-
-~~~sql
-ALTER TABLE `page` ADD UNIQUE KEY `time_insert` (`time_insert`);
-ALTER TABLE `post` ADD UNIQUE KEY `time_insert` (`time_insert`);
-ALTER TABLE `user` ADD UNIQUE KEY `time_insert` (`time_insert`);
-~~~
-
-## Release `v2.0` (coming from `v1.*`)
-For upgrading to this release, a manual database schema upgrade is required. Please execute the following SQL commands inside your blogs database.
-
-~~~sql
-ALTER TABLE `page` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
-ALTER TABLE `post` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
-ALTER TABLE `user` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
-~~~