Feature request: Is it possible to add some custom fields that should be got from Jira server additionally to default fields and available in the template?

[dioniseo]

Hello, thanks for your plugin it's very useful! The question is whether you have a parameter to add some custom fields to the request that plugin sends to Jira server? It would be very useful as there are some cases when users have some custom fields in Jira that they want to include to the changelog.

For now request that plugin sends to Jira server is:
https://jira.server.com/rest/api/2/issue/JIRA-0002?fields=summary,issuetype,labels,description,issuelinks

It would be nice to add some more custom fields to this request and render it in the mustache template.

Thanks!