You can download Manure on CurseForge and Modrinth:
  CurseForge:   https://curseforge.com/minecraft/mc-mods/manure
  Modrinth:      https://modrinth.com/mod/manure
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.
Manure makes animals periodically drop the manure item. By default this is done twice a day, but this is configurable. Manure can be used as a substitute for bone meal, to generate grass/flowers or to speed up crop growth. Can also be used from a dispenser. Works for any modded entity that extends the Animal class.
Configurable: ( how do I configure? )
manureDropDelayTicks (default = 12000, min 0, max 10000000): How long the delay in ticks is in between loaded animals dropping manure. 20 ticks = 1 second. By default twice a day, every 12000 ticks.
Blacklist:
The mod generates a blacklist on first load, located at ./config/manure/blacklist.txt.
By default, axolotls, bees and frogs are disabled.
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A cow dropping manure:
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Dispensing manure:
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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!