You can download Shulker Drops Two on CurseForge and Modrinth:
  CurseForge:   https://curseforge.com/minecraft/mc-mods/shulker-drops-two
  Modrinth:      https://modrinth.com/mod/shulker-drops-two
To keep a better overview of all mods, the issue tracker is located in a separate repository.
  For issues, ideas, suggestions or anything else, please follow this link:
    -> Issue Tracker
Because of the way mod loader files are bundled into one jar, some extra information is needed to do a PR.
  A wiki page entry about it is available here:
    -> Pull Request Information
Requires the library mod Collective.
   This mod is part of The Vanilla Experience modpack and Serilum's Extra Bundle mod.
Shulker Drops Two is a minimalistic configurable mod that allows Shulkers to drop two or more shells, up to 64. It'll use the normal drop chance of shells by default. This means that the amount of shells dropped will only be altered if one would've dropped without the mod. You may also enable an option in the configuration page to make Shulkers always drop their shell and ignore the drop chance entirely.
Configurable: ( how do I configure? )
------------------
You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.
Serilum.com contains an overview and more information on all mods available.
Comments are disabled as I'm unable to keep track of all the separate pages on each mod.
For issues, ideas, suggestions or anything else there is the Github repo. Thanks!