[casper] the casper library

[shu.lean]

Dear Casperites,
I am a  graduate student . And I am new in this field. I want to know where can 
I get the casper library  since I can't get any sources from the link  
https://github.com/casper-berkeley/correlator_library . Would  you send me a 
link or an attachment?
 
Thank you very much.
 
 lean