Refactor github-zenhub-sdk to use apollo-kotlin so that graphql is easier to work with#2

arotondo merged 14 commits intomasterStack8/github-zenhub-sdk:masterfrom

15737_refactor-github-zenhub-sdk-to-use-apollo-kotlin-so-that-graphql-is-easier-to-work-withStack8/github-zenhub-sdk:15737_refactor-github-zenhub-sdk-to-use-apollo-kotlin-so-that-graphql-is-easier-to-work-withCopy head branch name to clipboard