v1.5.1

• fix(populate): ordered set for populate
• fix(populate): ordered correctly set to null when empty (instead of undefined which could cause isLoaded to be incorrect)
• feat(query): ordered correctly set when using populate
• fix(query): Return Promise rejection to watchEvent for once queries
• feat(auth): disableEmptyAuthDispatch config option added for disabling dispatch of LOGOUT action when auth updates with null - #115
• feat(docs): api-docs-upload util added from v2.0.0 (for uploading different versions of docs)
• feat(examples): watchEvent snippet added to show querying outside of firebaseConnect (i.e. "lazy querying") - #232