* feat(firebaseConnect): allow reuse of existing subscriptions when paths change - @Lecss
* fix(watch): issue with multiple watchers on same path - @Tapped
* feat(storage): add size and contentType to file uploads - @urbantumbleweed 
* feat(storage): errors in `uploadFile` now call `console.error`
* feat(docs): `logErrors` config parameter added to docs
* feat(core): husky added as a dev dep so that lint is run on push (`prepush` already in `package.json`)
* fix(storage): `uploadFile` can accept both `options.progress` and options name together - #414
* feat(tests): tests added to confirm name option works with other options - #414
* feat(query): `onProfileWriteError` config option added to allow for hooking into error case of profile writes
* feat(storage): `deleteFile` metadata removal logic simplified
* feat(storage): `upload` metadata set logic simplified
* feat(tests): Unit tests for `firestoreConnect` improved to more deeply test listener updates on prop changes
* feat(tests): Unit tests added to test logic for `presence` and `sessions` config options
* feat(core): `npm publish` now takes place on Travis through `deploy` config (any new version merged to master will be published by default)