The Aquila Core mod is a simple library mod that provides utility and base game classes for the Aquila Mod which you can check out here.

It will also add utility to future modules added to the Aquila mod.

Currently the mod mainly provides decoration objects, like furniture and new building blocks.

Aquila Core provides utility for blocks that:

Need double block mechanic. Either vertically or horizontally and with our without rotation.
Connect with each other if facing the same direction.
Connect modular to create modular blocks, e.g. the modular beds from the Aquila mod.
Blocks that expand the building possibilities of Minecraft through vertical slabs, quarter slabs.
and much more...

Blueprint system: Craftable through the stone cutter block. Including the following categories: Smith, Mason, Woodworking, Alchemy, Jewelry, Writing, Clothing and Art.
Blockwheel: Selection screen for selecting different block variants. Supports static block and item entries as well as ids for blocks.

A huge thanks goes to LegendaryPorpoise for helping with the new block wheel. You can check out his mod here.