Clear alt format field value on "Clear" method call

[Yakim]

No description provided.

[benjamin-albert]

Thank you for opening a pull request and help make this plugin better for everyone!

This change looks good to me, but we should really have a unit test for this.
@Yakim Do you want to try to write the test yourself, or would you prefer that we write the test?

I personally learned a lot from writing unit test for this project and it's changed the way I write JavaScript everywhere.

We would be glad to help you if you want to try and write the test.

[KidSysco]

I was thinking the same thing. I would be willing to write the test as well. Let me know how you guys want to handle it!

[KidSysco]

ok that must be a "no".

I will write a unit test for this then commit this week.

[benjamin-albert]

@KidSysco I guess we can close this pull request?

[KidSysco]

yep!