Template tools is very simple mod.
Craft tool, open GUI with right click and select blocks that you want harvest.
After that you can harvest blocks from 5x5 area with defined pattern.
If you want to see recipes, report issues or suggestions, go to https://github.com/valveo/TT-Issues
Modpack: You can use this in your modpacks.
If possible, just send me message so I can keep record about usage.