Update license

[flimzy]

No description provided.

[codecov]

Codecov Report

Merging #503 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #503   +/-   ##
=======================================
  Coverage   92.14%   92.14%           
=======================================
  Files          19       19           
  Lines        1057     1057           
=======================================
  Hits          974      974           
  Misses         52       52           
  Partials       31       31           

Impacted Files	Coverage Δ
attachments.go	83.07% <ø> (ø)
bulk.go	94.52% <ø> (ø)
changes.go	100.00% <ø> (ø)
cluster.go	100.00% <ø> (ø)
config.go	100.00% <ø> (ø)
db.go	84.07% <ø> (ø)
driver/changes.go	100.00% <ø> (ø)
driver/errors.go	0.00% <ø> (ø)
errors.go	88.00% <ø> (ø)
errors/errors.go	100.00% <ø> (ø)
... and 9 more

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