v2.0.0-beta.9

• feat(auth): reloadAuth added for reloading auth (calls firebase.auth().currentUser.reload()) - #273
• feat(auth): linkWithCredential added for linking auth with credential - #268
• feat(auth): store.firebaseAuthIsReady is now added by reactReduxFirebase store enhancer - promise that resolves once auth state is ready - #264
• feat(auth): authIsReady promise added for waiting for auth to be ready - #264
• feat(queries): ordered always set as null instead of undefined - fixes possible issue of isLoaded not always being correct
• feat(core): firebaseStateName constant - assumed name of firebase state to be used in authIsReady
• feat(core): attachAuthIsLoaded constant - boolean for enabling/disabling the
  attaching of firebaseAuthIsReady to store (true by default)
• feat(build): yarn.lock removed - npm5 is faster
• fix(build): v2.0.0 branch added to travis config (so v2.0.0 pushes/merges are built)
• fix(build): babel-preset-env used in place of babel-preset-es2015 (fixes deprecation warning)

NOTE v2.0.0 pre-releases are now made available on the next tag instead of the canary tag