The whitelist is now based on manually add explicit entries instead of
automatically adding every existing block. This alone should save a few
MB of RAM depending on the modpack size.
Additionally the FacadeConfig is no longer extending the normal
Configuration provided by Forge. It will only parse the file once per
start and store the settings in an optimised collection to further
reduce memory consumption.
Any full block without a TileEntity and having a model is whitelisted
automatically and does not need an explicit entry anymore.
By default vanilla and AE2 glass is added as they are no fullblocks
technically.
The whitelist technically allows many more blocks now. E.g. stairs,
slabs or even items like saplings. But with various rendering quality.
Further there is an option to allow facades based on TileEntities, this
is completely unsupported and can work or corrupt the whole save.
yueh
b1ac0adfd8