Bump rsvp from 4.7.0 to 4.8.4 (#271)
Bump rsvp from 4.7.0 to 4.8.4 (#271)

Bumps [rsvp](https://github.com/tildeio/rsvp.js) from 4.7.0 to 4.8.4.
<details>
<summary>Changelog</summary>

*Sourced from [rsvp's changelog](https://github.com/tildeio/rsvp.js/blob/master/CHANGELOG.md).*

> # Master
> 
> # 4.8.2
> 
> * restore cast for 4.x
> 
> # 4.8.1
> 
> * Confuse Webpack (make is easier to pack this module)
> 
> # 4.8.0
> 
> * reject promise when non-array promise is passed to RSVP.filter
> * fix issue with registering event callbacks
> * remove publishing to S3 and rely on `npm` and `jsdelivr.com` instead
> * general cleanup
</details>
<details>
<summary>Commits</summary>

- [`ac50a0a`](https://github.com/tildeio/rsvp.js/commit/ac50a0a1308a6f2e5eb783e9d6435fb72a29a06f) release v4.8.4 🎉
- [`9be07de`](https://github.com/tildeio/rsvp.js/commit/9be07de475bea39cbcd703b19080c6ce7b87eebc) port [**codeworrior**](https://github.com/codeworrior)'s stefanpenner/es6-promise#339
- [`1ba4bf7`](https://github.com/tildeio/rsvp.js/commit/1ba4bf7837ab2470b0c5f1b596c4ca172ba23c95) Merge pull request [#536](https://github-redirect.dependabot.com/tildeio/rsvp.js/issues/536) from xg-wang/master
- [`eb5bd44`](https://github.com/tildeio/rsvp.js/commit/eb5bd44912f7513fba88c90c20d4af86df8b6a31) fix backtick
- [`bcd0936`](https://github.com/tildeio/rsvp.js/commit/bcd0936d7927b31b4cb8f8710b20497f8f554748) Merge pull request [#535](https://github-redirect.dependabot.com/tildeio/rsvp.js/issues/535) from michga/patch-1
- [`beae443`](https://github.com/tildeio/rsvp.js/commit/beae4430056399cae280086c8f17c5f06c0834c2) typo
- [`879fe32`](https://github.com/tildeio/rsvp.js/commit/879fe324f9810747f9feac1f679f3c357c0e6627) release v4.8.3 🎉
- [`f81b8d4`](https://github.com/tildeio/rsvp.js/commit/f81b8d4dc998217a10e097f7299aac760285d986) Merge pull request [#534](https://github-redirect.dependabot.com/tildeio/rsvp.js/issues/534) from bekzod/update-libs
- [`d306869`](https://github.com/tildeio/rsvp.js/commit/d30686918e32e1c5a4692151da8979c7a03b6f77) bump deps
- [`238f66b`](https://github.com/tildeio/rsvp.js/commit/238f66bbb475acfce4c37989dc420e244ccee1b8) Merge pull request [#495](https://github-redirect.dependabot.com/tildeio/rsvp.js/issues/495) from bekzod/align-things
- Additional commits viewable in [compare view](https://github.com/tildeio/rsvp.js/compare/v4.7.0...v4.8.4)
</details>
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