Make a first alpha release

Yeah was thinking the same last week ;) I think, since we are using it for quite some time in PROD actually it's ok to release an alpha. Alpha's are "ok" to have small bugs :P

I can do this!

Tagged and released

https://www.drupal.org/project/graph_mail/releases/2.0.0-alpha1 →
https://www.drupal.org/project/graph_mail/releases/1.0.0-alpha1 →

Now we can properly tag and release bugfixes 😇

I think we should also set the default branch to 2.0.x

Truly, I wanted to create an alpha release after all the parameters for class constructors were "stabilized." (That is the second reason for which this issue was a plan and not a task.)
Since an alpha release has been created, this issue can be closed.

Automatically closed - issue fixed for 2 weeks with no activity.