v4.48.0 Mystery Items June 2018 and Contributor PRs

API

• Feature: Include timestamp of flagged chat message sent to Slack integration (thanks to @thefifthisa)
• Feature: Initial support for new API version 4
• Feature: Inbox messages GET route for API v4
• Content: Subscriber mystery items for June 2018
• Fix: Address async issue that could cause crons to run twice in a very short period (thanks to @Hus274)
• Chore: Locale files updated
• Chore: Bailey news announcements

Client

• Fix: Obtain user's party status (no party, solo party, party w/members) to decide what to display when clicking party view buttons (thanks to @probaton)
• Fix: Better margins on boss monster data (thanks to @fentie)