AOBA has updated the original mod, fixing the folder name, and it now works on Linux. Thus, I won't be updating this for 1.5
This is an unofficial version of AobaKuma's mod, since it doesn't currently work with Linux, and he hasn't fixed it yet. All I changed was one character. I renamed the 'common' folder to 'Common', since Linux is case-sensitive, and doesn't find the folder if it's named differently than the devs intended.
Fortifications - Neolithic - Original Mod
I'll take this down if the original mod author fixes the issue in his mod or asks me to.