Add fields, (entity) properties and updateHistory to getIssue()

The getIssue call does only support the $expand parameter, but the REST API has some other handy parameters that we should make available as well.

https://docs.atlassian.com/jira/REST/cloud/#api/2/issue-getIssue
https://developer.atlassian.com/jiradev/jira-platform/building-jira-add-ons/jira-entity-properties-overview
