As Dairy is not a single library, each Dairy module will give its own instructions on installation, what other things you need to add, etc.

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Using Snapshots

The per-module instructions in these docs are instructions on how to install from Dairy’s releases repository. You may wish to use snapshots if you wish to test unreleased features, or if you’ve asked for a specific fix to be applied to the library, and you need to use it immediately. All Dairy module installation instructions tell you to start by ensuring that you have the Dairy repository added as a source:
This only needs to be done once, if you already have this, no need to add it again.
Add 
repositories {
	maven {
		url "https://repo.dairy.foundation/releases"
	}
}
To TeamCode’s build.gradle, above dependencies. You can then also add snapshots to this, as you would any other maven repository: 
repositories {
	maven {
		url "https://repo.dairy.foundation/releases"
	}
	maven {
		url "https://repo.dairy.foundation/snapshots"
	}
}