No custom widget HTML class possible

[barseghyanartur]

If I use captcha plugin with widget CaptchaTextInput and feed {'class': 'form-control'} attrs to it, it stil looks ugly.

CaptchaTextInput(attrs={'class': 'form-control'})

[iPAS]

I also need the same function as per your suggestion.
And, I was trying to revise the code for a while.
Unfortunately, my skill was not enough.
So, I did as the document said,
that is to copy 'site-packages/captcha/templates/captcha'
into a Django project's template directory.
Then, I revise template files inside the directory.

[ziima]

Should be solved by #139, at least in Django >= 1.11.