Expected Behavior

Would like to see private methods/variables in the documentation

Actual Behavior

Methods and variables that begin with "_" are excluded.

Steps to Reproduce

1. Generate docs that have a private method.
2. See that the private method does not show up

Additional info

• pdoc version: (installed from master) % pdoc --version
  pdoc 0.10.0

If I change this line:
https://github.com/mkinney/pdoc/blob/master/pdoc/__init__.py#L409

to this:

return not ident_name.startswith("__")

It does what I'd like to see.

Would it make sense to add a command line arg (or configuration setting) that would enable this?