Without this, a user (say, cfclrk's markdown-widget) could provide a title of "README.md" as it did when I discovered this bug. That made the exported HTML un-usable.
[x] I have read the CONTRIBUTING.md document.
[x] I have updated the documentation in the README.md file if necessary.
[x] I have added an entry to CHANGES.md.
[x] I have added tests to cover my changes.
[x] All new and existing tests passed (using make test).
Fixes cfclrk/markdown-xwidget#9
Without this, a user (say, cfclrk's markdown-widget) could provide a title of "README.md" as it did when I discovered this bug. That made the exported HTML un-usable.
make test).