Hello Every one....

I have a question,

 why them do release new version 

ex:jquery-1.10.1.min.js or jquery-2.0.2.min.js but remove some function in old version

... I'm realy not understand why ., 

i'm ever think about it, previous sometimes i can running a program use a jquery 

but that not work when use version else.

You know , I think new version it's the best than previous versions  but why like that ...

can someone here  explain to me about it

thanks regards