IRL birds shed their feathers to replace them with new ones all the time, so why not in minecraft?

This datapack enables you to get feathers in a survival friendly, no cheats, no mods way without killing chickens.
I tested it on Vanilla versions release 1.14.4 and snapshot 19w36a.

How the pack works?

• Chickens will drop a feather (spawn item with id minecraft:feather) at a random interval between 6000 to 12000 ticks (similar interval as vanilla eggs according to wiki, but with separated "timer").
  
• Only works for vanilla minecraft:chicken entity, if you have a mod that spawns a different chicken entity, it will not be affected.
• As with eggs, only adult chickens will shed feathers
• Contrary to eggs case, jockey chickens do shed feathers
• Interval is kind of configurable, either by modifying the constants in the init.mcfunction, or by changing the RNG's max value (see note below).
• Allows tagging a/any/all chicken as ignored to prevent feather shedding, to do this add the tag "crfs_disable" to the desired chicken/s

Future versions ideas/improvements I intend to implement

• Own control variables for RNG, currently there's a limitation from the RNG pack that uses a global RNG MaxValue variable, the pack overwrittes this variable and if the player do the same it affects this pack's functionality.
  
• Make it so the chickens shed randomly 1 or 2 feathers instead of always 1
• Add triggers to allow players to customize how it works (allow chicks to shed, jockeys, interval min/max, disable globally, playsound, etc)
  
• Spawn the feather with motion tag so it will move away from the chicken just like eggs do.

Important Note:
This pack depends on the pseudo random number generator published by github user mcskware (link below)
If you don't install this RNG datapack the chickens will shed feathers at a fixed interval. The minimum (6000 default) ticks.

Credits and mentions
  mcskware github user for the prng datapack (https://github.com/mcskware/prng)
  voodobeard's pack (http://mc.voodoobeard.com/) for inspiration. Their pack don't spawn feathers, but replaces arbitrary vanilla spawned eggs