what is chnage log ? and what is use for ?

[MR JO]

hello dear mods , and site members,
iam new here and want help from all , i need to know everything about the games and how to play ,
so first step i want to know what i change log mean ? and how to use it ?
greetings,
MRJO

 

[I'm Not Thea Lundgren!]

The changelog tells you what has changed since the last release of the game.