UL and OL in series are parsed as one list

[SamyPesse]

Basically markup-it, marked and kramed are failing to parse the following snippet as GitHub:

1. First point.
2. Second point.
3. Third point.

- Bullet point.
- Another bullet point.

markup-it parses it as:

1. First point.
2. Second point.
3. Third point.
4. Bullet point.
5. Another bullet point.

Related: GitbookIO/community#272