Eras, Difficulties, and IRRI Update

THIS VERSION IS NOT BACKWARDS-COMPATIBLE TO UNCIV 3.15 AND OLDER VERSIONS

This update adds the required Eras.json as mandated and as well as the Difficulties.json file for the mod. Also, this updates the IRRI's tile bonus to the recent uniques filter.

I hope you all are safe and have a nice stay.

P.S. (Sorry this took a while to release but honestly I am shocked my mod is still downloadable but it doesnt work until now hahaha)