How to add new mode to hashcat?

[godsquare]

Hello,

I would like to add mode 33400 (https://github.com/hashcat/hashcat/pull/3907) to hashcat. It looks like the stable version and the beta version (https://hashcat.net/beta/) do not support this mode yet. Is there any tutorial on how I can add this mode to hashcat? 

Thank you,