Setting title_format = false does not work

[vytas7]

Hello,
I would like to disable title generation as our file already has a title heading.

README.rst mentions this can be achieved by setting title_format to false in the pyproject.toml config:

    title_format = "{name} {version} ({project_date})"  # or false if template includes title

However, that doesn't quite work for me:

...

  File "<... my virtual env ...>/lib/python3.7/site-packages/towncrier/__init__.py", line 122, in __main
    top_line = config["title_format"].format(
AttributeError: 'bool' object has no attribute 'format'

Setting title_format to an empty string seems to work (?) as a workaround, although a lot of empty space is emitted suggesting it is sort of using that string to format a zero-length heading.

[altendky]

@vytas7, I think this has been fixed though there seemed to be no tests for it. I added a couple in #299 (and snuck in one less newline which seemed more consistent). Would you be willing to take a look at that and/or try out the master branch to see if your issue is still present?

[vytas7]

Thanks for looking into this @altendky !
Checking master and your feature branch.

[vytas7]

towncrier==19.9.0rc1 already works as expected (false is honoured).
Now it's just a matter of getting a stable release out 🙂

(FWIW, using the branch from your PR did not render any difference in our case.)