* [Change] forbid legacy sample code style

* [Change] remove legacy sampcd_processor.py

* [Fix] fix command

* [Change] check plain style sample code

* [Fix] fix logger

* [Change] remove arguments

* [Change] remove cb_required

* [Change] change parse args

* [Change] restore creation.py

* [Change] make xdoctester multiprocessing

* [Add] add timeout directive

* [Fix] fix code-block

* [Fix] add ubelt requirements

* [Fix] patch xdoctest in __init__

* [Fix] codestyle

* [Change] restore metric.py

* [Add]Add Xdoctester

* [Fix]fix beta docstring

* [Doctest]change dirichlet docstring

* [Doctest]change gumbel docstring

* [Doctest]change bernoulli docstring

* [Doctest]change categorical docstring

* [Doctest]change ops.py docstring

* [Doctest]change conv docstring

* [Doctest]change distance docstring, test=docs_preview

* [Change]add ref

* [Change]patch xdoctest debug