v1.5.22

• Updated .gitignore
• Small code cleanup

v1.5.21

• Fix HTML validation errors and warnings

v1.5.20

• Update docs with PHP file config

v1.5.19

• Enable caching reCaptcha verify response in array cache

v1.5.18

• Added errorCallback for recaptcha

v1.5.17

• Added note regarding Symfony 4 config files.
• Add support Twig 3

v1.5.16

• Add support for Symfony 5

v1.5.15

• Use required phpunit instead global in travis CI
• Specify Twig version constraints

v1.5.14

• Fixed Twig spaceless tag

v1.5.13

• Add timeout for the reCAPTCHA verification