MedievalMod 2016-10-05

This Mod deletes everything after the Medieval Era not just stopping techs, so, your file size is smaller and the extra units+buildings don't show up in the Civilopedia
BTS 3.19
Works with 3.13
(Thanks for testing Raneday )
Probably 3.17
THREAD
Also try el_hidalgo's Mod: MedievalCiv