Ability to use Stepper with template forms

[ganqqwerty]

Bug, feature request, or proposal:

Add the ability to describe forms in a Template form way, not only as Reactive Forms.

What is the expected behavior?

Make it possible to use template forms inside the steps.

What is the current behavior?

Currently only Reactive forms can be used, because [stepControl] must point to a form group in order to watch the state of the form

What is the use-case or motivation for changing an existing behavior?

Not everyone uses Reactive Forms, there's a lot of Template forms code out there.

[crisbeto]

The stepControl is used primarily to figure out the validation state of each step, however it's not required. Alternatively you can bind to the completed which lets you control the completion yourself.

[ganqqwerty]

is it possible to control each step with completed? How do you do this?

[crisbeto]

Each step has a completed property that is a boolean that can be used to mark whether the user can continue from a step. You can read more about it in the docs.

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