Bump fflate version

[101arrowz]

Hello! I noticed you added fflate in 2ae29fa but had some issues with importing properly. I wanted to let you know that I fixed the problem with an extraneous require appearing, you can update to v0.5.0 on NPM to make it work properly. I hope the library works well for you :)

[lojjic]

Great, thanks for the heads up! I'll give it a shot.

Really great job on fflate, by the way. I'm very impressed. :)