Support to uncompleted yaml files during editing

[andxu]

I am using https://github.com/redhat-developer/yaml-language-server written by redhat, yaml-language-server is using yaml-ast-parser to parse the yaml file and it has trouble when the yaml content is not complete, eg:

whatever: true
a

It will be great if yaml parser will support this feature, please let me know if you are interested in this feature, my email is andxu and welcome for more discussions.