I am trying to integrate DFFRAM 256x32 into my user_project. I'm wondering whether to use the pre-made macro from the DFFRAM repo(https://github.com/AUCOHL/DFFRAM) or should I take the verilog code and edit the config.json to create it in caravel_user_project. Can someone give me advice on this? If possible, please send me documents about it. Thanks a lot