Update changelog format

CHANGELOG.md

@@ -1,28 +1,28 @@
 # Changelog
 
-## 1.4 (2018-03-30)
+## [1.4] - 2018-03-30
 
 Send message if a mob gets killed by something else than a player (e.g. by another mob or plugin).
 
 **Note:** The `killed` event type is now called `killed_player`. The old one now exists as a short hand in the messages configuration to define a message for both event types (player and other). From now on, use `killed_player` in the `/talkingmobs toggle` command and for the global events configuration in the `config.yml`.
 
-## 1.3 (2018-02-13)
+## [1.3] - 2018-02-13
 
 * Added "tamed" event showing a message once a mob is tamed
 * Added "version" sub command
 * Prevent spamming of messages (e.g. while attacking mobs or interacting with them)
 * Send messages if a mob is looking at the player (and the player is looking at the mob)
 * **BREAKING CHANGE**: Moved messages and per player configuration to separate files - Mob messages are now configured in `messages.yml`, per player configuration is saved in `players.yml`
 
-## 1.2 (2018-02-01)
+## [1.2] - 2018-02-01
 
 Allow to configure which events should show a message (attacked, interacted, killed, spawned). The "spawned" event requires a list of spawn reasons for which a message should be shown.
 
-## 1.1 (2018-01-29)
+## [1.1] - 2018-01-29
 
 * Support for Bukkit 1.12 (not sure whether it will still work with older Bukkit versions as well)
 * Only react to events triggered by real mobs (e.g. minecarts or other players are not handled as mobs)
 
-## 1.0 (2018-01-29)
+## [1.0] - 2018-01-29
 
 Initial release