Bump fflate from 0.8.2 to 0.8.3 (#327)

Bumps [fflate](https://github.com/101arrowz/fflate) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/101arrowz/fflate/releases)
- [Changelog](https://github.com/101arrowz/fflate/blob/master/CHANGELOG.md)
- [Commits](https://github.com/101arrowz/fflate/compare/v0.8.2...v0.8.3)

---
updated-dependencies:
- dependency-name: fflate
  dependency-version: 0.8.3
  dependency-type: direct:production
...

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package.json

@@ -16,7 +16,7 @@
     "debounce": "^2.2.0",
     "detect-browser": "^5.2.0",
     "family-chart": "^0.9.0",
-    "fflate": "^0.8.2",
+    "fflate": "^0.8.3",
     "file-saver": "^2.0.5",
     "javascript-natural-sort": "^0.7.1",
     "js-cookie": "^3.0.7",