add 'assignee' to data

[tenten0213]

becomes able to get the 'Assignee' data after merge this PR.

[suer]

It is nice idea!

It seams that Redmine will crash if @issue.assigned_to is nil. I would like you to add a sentence to check nil at RedmineWebhook::AuthorWrapper#to_hash. It should return {} if its @author is nil.

For example, as follows:

  def to_hash
    return nil unless @author
    ...

[tenten0213]

It seams that Redmine will crash if @issue.assigned_to is nil. I would like you to add a sentence to check nil at RedmineWebhook::AuthorWrapper#to_hash. It should return {} if its @author is nil.

I fixed it. It return "assignee": null if not set assignee.

{
  "payload": {
    "issue": {
      "author": {
        ...
      },
      "assignee": null,
 ...

[suer]

LGTM. returning nil is right. Thanks a lot.

[tenten0213]