Log Message:
Update ruby-safe_yaml to 1.0.1

0.9.7

* made handling of document frontmatter more robust
* added more descriptive message to the warning for omitting the :safe option

0.9.6

* fixed handling of files with trailing content (after closing ---)

For more detail, please refer \ 
<https://github.com/dtao/safe_yaml/commits/master>.