Introduced captcha plugin
New modifications
Make plugin captcha types work
Fix lots of updated and deprecated functions, aproaches, etc
Fix removed url() function with Url::fromRoute
Fix removed url() function with Url::fromRoute()->toString() method
Fix Captcha plugin manager definition
Fix Captcha plugin interface definition
Apply new plugin system in image_captcha module
Use https://github.com/Gregwar/Captcha as image captcha generator
Image captcha links
Remove redudant description property from image_captcha.links.menu.yml
Remove hook_permission in captcha module, add captcha.permissions.yml
Merge pull request #12 from lokeoke/8.0.x-plugins

Image captcha links
Merge pull request #13 from lokeoke/8.0.x-permissions

Remove hook_permission in captcha module, add captcha.permissions.yml
Merge pull request #3 from M1r1k/8.0.x-plugins

Introduced captcha plugin