Daniel

Results 2 issues of Daniel

Solves #242 It introduces a new option `emptyLines` for default and full version. When it is enabled, it will preserve the empty lines and convert them into ``. e.g. Markdown...

![image](https://cloud.githubusercontent.com/assets/4077259/12185062/d4f896d8-b5fd-11e5-8d96-f79c69f49a6c.png) It would make rollback selected lines easier.

feature