Remove computed-property.override deprecation

[tniezurawski]

I see this deprecation since Ember 3.9.0:

DEPRECATION: The <(unknown):ember2859>#options computed property was just overriden. This removes the computed property and replaces it with a plain value, and has been deprecated. If you want this behavior, consider defining a setter which does it manually. [deprecation id: computed-property.override] See https://emberjs.com/deprecations/v3.x#toc_computed-property-override for more details.

I believe the code responsible for that is:

https://github.com/Exelord/ember-custom-actions/blob/fa509a8ab6106624b89363d23eb2895eb6793f64/addon/actions/custom.js#L8-L14

Where you override options computed property:

https://github.com/Exelord/ember-custom-actions/blob/fa509a8ab6106624b89363d23eb2895eb6793f64/addon/actions/action.js#L44-L46

Solution:
I think you should set options value ({}) in the init hook. It seems like computed prop was used here to avoid state leaking.

[Exelord]

Yep this is a fix :)

[zyniq82]

I think this was fixed in #56, so the issue can be closed now?