Yang - new language

[prettydiff]

https://tools.ietf.org/html/rfc6020

A knowledge modeling language that compiles to XML, but can be parsed with the style lexer.

[prettydiff]

 list user {
     key "name";
     leaf name {
         type string;
     }
     leaf full-name {
         type string;
     }
     leaf class {
         type string;
     }
 }