adding the support to custom_property_values webhooks

[hazemarian]

When there is a webhook event for custom_property_values the pkg will return unknown X-Github-Event in message: custom_property_values

I think adding this for support will be simple

[gmlewis]

Would you like to create a PR for this, @hazemarian, or shall I open this up to other contributors to this repo?

[hazemarian]

i will take care of it

[gmlewis]

i will take care of it

Great, thank you, @hazemarian! It's yours.

[gmlewis]

@acouvreur - normally, we like to give the original assignee a chance to report on their status before writing a new PR to address an issue assigned to someone else.
However, seeing that you already implemented this, and we haven't heard from @hazemarian for five months, I'll reassign it to you.

EDIT: for some reason, I can't assign it to you, so I've simply unassigned it from @hazemarian .

[acouvreur]

@acouvreur - normally, we like to give the original assignee a chance to report on their status before writing a new PR to address an issue assigned to someone else. However, seeing that you already implemented this, and we haven't heard from @hazemarian for five months, I'll reassign it to you.

EDIT: for some reason, I can't assign it to you, so I've simply unassigned it from @hazemarian .

That make sense, given the time elapsed during the initial issue and now I didn't bother asking if I could implement it.

If this happens again, I'll ask first :)

[gmlewis]

Interesting! TIL that I can only assign a GitHub issue to someone who is either a past contributor or someone who has commented to the actual issue first. I suppose that makes sense, so that I can't just assign issues to random GitHub users.
😄