Include symbols that don't have documentation if their members have some

[mathias-baumann-sociomantic]

Often a class for a module might be documented in the module comment/header and the class itself has no actual documentation header. However it's members do have documentation, yet the whole class is not mentioned.

[JakobOvrum]

Unfoturtunately, this is a DDoc issue, and there is nothing that can be done about it in bootDoc. I recommend filing it at https://issues.dlang.org/ .

In source code it can be worked around by putting an empty documentation comment /// above the type declaration.