GemRunner

Added MCStats support

The plugin uses Hidendra's plugin metrics system. The following data is collected and sent to mcstats.org unless opted out.

• A Unique Identifier
• The server's version of Java
• Whether the server is in online or offline mode
• The plugin's version
• The server's version
• The OS version/name and architecture
• The number of cores in the CPU
• Number of players online
• Metrics version

To opt out, edit plugins/Plugin Metrics/config.yml and set opt-out to true.