Update go-ipfs to 0.4.22

[machawk1]

Closes #621

[codecov]

Codecov Report

Merging #623 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #623   +/-   ##
=======================================
  Coverage   24.49%   24.49%           
=======================================
  Files           6        6           
  Lines        1237     1237           
  Branches      185      185           
=======================================
  Hits          303      303           
  Misses        910      910           
  Partials       24       24

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[machawk1]

The state of ipfs/kubo#6506 conflicts with https://github.com/ipfs/go-ipfs/releases and https://dist.ipfs.io/#go-ipfs. The binary at the latter passes all Travis tests, so we can probably safely merge.