pw374/omd — pull request #75 by Chris00 (2013-11-23 20:53:11+00:00)
Title: Improve spaces handling

- `Br` is not followed by `NL` (just lite `
` does not need to).
- Lines starting with 4 spaces only indicate code when they are not blank.
- Collapses several `Newline` before an indented code block.