Option 'charset' on the CaptchaType has no effect

[middlebrain]

According to the documentation the following statement should work:

$builder->add('captcha', CaptchaType::class, array(
    'charset' => '23456789',
));

But it has no effect.

The 'ignore_all_effects' => true option is also ignored. Maybe there are other options affected too.

[jentscke]

The issue only occurs while using the as_url-option.

Try to add the missing options in this array:
https://github.com/Gregwar/CaptchaBundle/blob/master/Type/CaptchaType.php#L114
works for charset and ignore_all_effects for me.

Don't have the routine to provide PRs, feel free to do so ;).

[jentscke]

Added PR for this issue, see #231 @middlebrain @Gregwar