Pokekotlin Versions Save

Bintray proved to be unreliable, so the package is now published on GitHub packages. It's also updated to the latest dependencies (kotlin and retrofit) and updated to pass tests on the latest pokeapi data.

EDIT: Turns out GH Packages requires auth even for public packages, so use Jitpack:

repositories {
    mavenCentral()
    maven { url 'https://jitpack.io' }
}
dependencies {
    implementation 'com.github.PokeAPI:pokekotlin:<VERSION>'
}