Fix php 7.2 compatibility.

Add Laravel 5.5 support, add filters, fixed parsed rules, add choice …

…override.

Fix issue kristijanhusak#354.

add creating form with arrays, allow validating when resolved, severa…

…l fixes.

Merge pull request kristijanhusak#310 from mauricius/issue307

Added Laravel 5.4 compatibility

Add `buttongroup` field type, fix twig field access, allow custom `id`

and `for`.

Bump min php version to 5.6, add support for Laravel 5.3, add `alterF…

…ieldValues` and `alterValid` methods.

Add events, setup compatibility with Laravel 5.3, and much more.

Fix error_messages in child forms, replace Translator with Translator…

…Interface, add check for field name.

Add `label_show` and `error_messages` properties, fix nested translat…

…ion.