This update is long overdue and I apologize for that. It's mostly fixes with amethyst geodes. There have been some long-standing bugs from 2.3.1 and 2.3.2 as they've been a thorn in the sides of many for quite some time. If you disabled certain options due to these bugs, please consider re-enabling them.

Changes by me, Roadhog360

Fixed furnace crackle playing the sound in empty furnaces
Fixed mesa shafts crashing servers.
Fixed some ore generation issues that would cause stuff like diorite, granite, and andesite to not generate exposed to air
Fixed an issue with the mod's entity replacer which caused enabling new boats over old boats to completely break some worlds.
Fixed berry bushes not consuming bone meal
Fixed Blast Furnace and Smoker showing in NEI when they're disabled
Fixed Fly-sprinting simply not working
Fixed new anvils not being obtainable
Fixed new enchanting tables not being craftable
Fixed tile replacer not running replacement if there is no tile entity (like with anvils)
Fixed colorless Shulker boxes taking on the color of a Shulker box previously occupying that tile
Adjusted some config comments, and fixed config typos, and add description for new anvils
Added amethyst geodes and the relating blocks, calcite, smooth basalt, amethyst clusters (split into two IDs), budding amethyst and amethyst blocks.
Amethyst geodes currently generate in a circle. The vanilla 1.17 code is highly complex and I wasn't able to port it. The size of the circle still varies though.
Several workstation blocks from 1.14 have been added although they don't do anything yet. Their item description clarifies that they are currently non-functioning.
Frost walker no longer generates ice over entities
Added option to adjust new boat speed
New boats will now retain their name when being renamed. (Except the oak boat when replaceOldBoats is on due to the way it works)
Added an option to ban entities from sitting in boats, either using entity ID or finding a string in the classpath
Added the option to make all blacklists be treated as whitelists instead

And now some changes thanks to my new friend embeddedt!:

Potentially reduced cascading worldgen lag
Fixed the Blue/Red Power stone tile recipe conflict
Fixed tuff configuration being ignored and using the deepslate blob size instead
Fixed new boats being glitchy by making them a clientside controlled vehicle once more. (Thanks embeddedt!)
Added a VERY EXPERIMENTAL version of spectator mode!
Added experimental option to not drop items when closing your inventory
Added swift sneak
Added chest boats
Added tinted glass
New boats can break lily pads
Added a mixin to fix stepping from a lower block into a two block tall entrance (Thanks again embeddedt!!)

When the step fix is enabled, also allow stepping up to .6 blocks instead of .5

Et Futurum Requiem

Colored Beds

Modern Boat and End Rod

Pick from several signs!