Headings get a <br /> imported after the = if followed by a non-empty line

[mnoorenberghe]

This breaks the formatting on mediawiki. The heading doesn't act as a heading due to the <br />.
Test content:
`
=== This is a heading that won't work ===
This is some text on the line immediately following so this won't import fine

=== This is a heading that will work ===

This text has a new line before it so the heading will import fine.
`

Thanks for making this tool by the way!