Livedata Ktx Versions Save

• Fix SingleLiveData after reattach https://github.com/Shopify/livedata-ktx/issues/19

• Use inline and crossinline for reducing the number of methods

• Use inline and crossinline for performance and reducing the number of methods. Thanks to @takahirom

LiveDataKtx 2.x is for LiveData 2.x

This release has no code changes. However, LiveDataKtx 1.x is meant for LiveData 1.x.

• Add combineWith extension

Transfer ownership to Shopify