Laravel 7 compatibility

Merge branch 'release/v4'

* release/v4:
  Laravel 7 compatibility. Closes #38
  php 7.4 added to travis file

Configuration "lang" fixed

Merge branch 'release/v4'

* release/v4:
  Optimization and bug fix. Closes #27

Fully customizable widget

What's new in v4.x?
http://laravel-recaptcha-docs.biscolab.com/docs/whats-new

Laravel 6 ready

Merge branch 'release/v3'

* release/v3:
  Laravel 6 ready

Select language

• Select specific language setting "hl" query parameter on API URI.
• PSR2 code styling

Custom cURL timeout

• curl_timeout config variable added (default is: 10 seconds)
• array_get (deprecated helper) replaced by Arr::get

Test improved: Orchestra\Testbench 3.8 compatibility

Declaration of Test::setUp() must be compatible with Orchestra\Testbench\TestCase::setUp()

Coverage test now supported

Custom routes registered directly in ServiceProvider instead of in the routes.php file

validateV3 fixed and enhanced

• Task #19 - bugfix: validateV3() must be of type array, boolean returned

ReCaptchaController@validateV3 action associated to biscolab-recaptcha/validate route

Merge branch 'release/v3'

* release/v3:
  ReCaptchaController@validateV3 action associated to biscolab-recaptcha/validate route
  ReCaptchaController created