Is there a mod to change it back? and if yes, how do you install it?

Maybe a new olive tree is something you would be interested in? There's already one in the game that you could use as a reference.  We could use it for an ochard and for the erechtheion and the olive mill. https://wildfiregames.com/forum/topic/138517-erechtheion https://wildfiregames.com/forum/topic/125638-athenian-olives

These are Zoroastrian priests or Magi depicted on the reliefs of Persepolis from the Achaemenid empire. These are not women. 

AI After #8468, there are likely some OOS which I didn't notice. In the forum are much discussions about the AI. I might give those people a hand. Multi-threading When we use a library I'll start to rewrite some of our concurrency code, to fit more nicely the ideom of the library. Motivated by #8521 but based on this branch I'll once again try to separate and move the simulation to a different thread. When I have enough courage I'll rebase my lingering PRs and "rebase" my Diffs from Phab.

Early access for players testing versions R28 or R29 of the game. It's basically Petra, but with customization options and for game >= R28. Some features from Petra_Expert have been added. Added the ability to customize the bot before starting the game. Values are not saved when exiting the game or returning to the previous menu. More detailed description of parameters: Added the ability to recruit support units from houses. The number of barracks has been increased to 5. The Research Manager has been slightly redesigned (instead of searching for technologies in a cycle, all technologies are stored in the cache and selected by a direct key: name or modifier by 1 step, the cache is updated when moving to the next phase or after the construction of a building is completed). Technologies from the Storehouse, Forge, and Champions remain in place, while the rest are currently disabled. With certain settings, the bot can reach up to 200 units in 11-12 minutes of play. Mod support:   r28-bot.zip