showdown/test/features/#69.header-level-start.md
Nik Wakelin e6aaf3a1c9 fix(headers): Ensures that Markdown headers are preceded by a space
Changes subParser for headers to require a space or tab
character before a header, so that

```md
  # Header
```

Is a valid header, whereas:

```md
  #Header
```

Is **not** rendered as a header.
2016-07-20 13:38:46 -07:00

42 B

Given

When

Then

foo

bar