Upgrading from gradle 4.5 and forgegradle "2.1-SNAPSHOT" to a newer version of both

// For those who want the bleeding edge
buildscript {
    repositories {
        jcenter()
        maven {
            name = "forge"
            url = "http://files.minecraftforge.net/maven"
        }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT'
    }
}
apply plugin: 'net.minecraftforge.gradle.forge'

version = "1.1"
group= "me.ryan.ryanair"
archivesBaseName = "ryanair"

minecraft {
    version = "1.8.9-11.15.1.2318-1.8.9"
    runDir = "run"
    mappings = "stable_20"
}

dependencies {

}

processResources
        {
            // this will ensure that this task is redone when the versions change.
            inputs.property "version", project.version
            inputs.property "mcversion", project.minecraft.version

            // replace stuff in mcmod.info, nothing else
            from(sourceSets.main.resources.srcDirs) {
                include 'mcmod.info'

                // replace version and mcversion
                expand '1.1':project.version, '1.8.9':project.minecraft.version
            }

            // copy everything else, thats not the mcmod.info
            from(sourceSets.main.resources.srcDirs) {
                exclude 'mcmod.info'
            }
        }

task copyJarToBin(type: Copy) {
    from "path\\to\\my\\modding\\folder\\Ryanair\\build\\libs\\ryanair-1.1.jar"
    into "path\\to\\my\\mc\\instance\\mods"
}