Release v0.4.21

[Kubuxu]

Even though the last release was 21 days ago, a large number of important fixes prompt release of 0.4.21.

Key Features:

• raise default fd limit to 8192 (ipfs/go-ipfs#6261)

Key Fixes:

• add: Fix adding multiple files (ipfs/go-ipfs#6255
  )

TODOs:
...

[magik6k]

I'd vote for including #6300 (base32 for cidv1) in this release. Done.

[Stebalien]

I'd vote for including #6300 (base32 for cidv1) in this release

Works for me but we'll need to wait for js-ipfs.

[obo20]

I'd like to see #6266 included in this if possible. I can certainly set this myself, but having it as an automated increase for others is probably a good idea until we figure out what's causing #6237

[obo20]

Also, I'm not sure if there's a fix for #6271 yet, but having this functionality working is one of the most important features Pinata needs right now.

[olizilla]

@Kubuxu please can we get some bullet points on what is already in this release and what's left to do?

[Stebalien]

New blocker: libp2p/go-libp2p#644. Yay!

[Kubuxu]

Created #6372

[davizalpe]

Hi,

Have you planned to upload the official docker image with the tag name of this release v0.4.21 to Dockerhub? Thanks.

[olizilla]

Dockerhub has failed to trgger the build for the v0.4.21 tag. We're looking into it. In the mean time the release tag can be used.

#3999