Update for form ^0.9.0

Merge pull request adamwathan#132 from Claymm/master

Support for ->required() on the label within a form group

Merge pull request adamwathan#125 from TemperWorks/master

Support laravel 5.4

Update form dependency

Use form ^0.8.10

Merge pull request adamwathan#105 from JesseLeite/make-extension-easier

Make extension easier by protecting these privates?

Bump Form dependency to 0.8

Merge pull request adamwathan#78 from Propaganistas/master

Add form-group methods

Wrap horizontal check groups so attributes are added to the correct e…

…lement

Merge pull request adamwathan#57 from JerseyMilker/fix-composer-requi…

…rement

Fix composer requirement.