Create TagTemplate class.
Add marge attributes and append value.
Add create, setLabel and get method.
Change to clone a object.
Add updateFromArray.
If set null to unset attributes.
Add comment.
Add updateFromArray.
If set null to unset attributes.
Merge branch 'develop' of https://github.com/primalbase/html-tag into develop
Delete TagTemplates.
Merge branch 'develop'

Conflicts:
	Tag/TagBase.php
	tests/TagTest.php