With the release of 2.0.0, major changes happen with the mod. There's some things that you will need to do to make the new version work.

Steps to getting 2.0.0 to work.
1. Remove any sprinkler and/or scarecrow related to the mod.
2. Save the game by sleeping.
3. Exit the game and delete the [JA]OneSprinklerOneScarecrow from your mods folder. This mod no longer needs it. 
4. You can now restart the game with the updated mod.
5. To enable Harder requirements for crafting, open the config.json that is created after you run the game atleast one time. And change ActivateHarderIngredients setting to true.

If by chance you forget to do any of the following, The mod should scan your farm when you load your save and remove any Legacy Haxor Sprinklers/Scarecrows.

If you run into any issues, feel free to make a post with your smapi log. You can help me find the issue by going to SMAPI Log Parser and following the directions to get to your error logs, then share the link in your post.

New things with the mod:

1. The mod is now totally independent of any item framework. And is totally re-written.
2. The Haxor Sprinklers will now act like a real sprinkler (You can add an Enricher) to it. 

Notes about the enricher use:

With the enricher only having one spot for Fertilizer, the mod may only fertilize upto 999 blocks away from the sprinkler. (I'm still looking into different ways of extending this.).