update v17.4

"Discord Suggestions" is a short serie that will feature random prompts from
the #suggestions channel on our Discord Server.

The aim of this serie is to chop down the long suggestion list, without
having to wait a specific theme. Each batch will last 5-10 updates and is planned on a bi-monthly basis (~)

-

- Added a Water Tower (2 versions) + the tile to make the characters walk on it
- Updated the themes and single files with the new stuff

From now on I'll post some drawing processes on Discord, for anyone curious

See you and happy game-making! :)