release for v0.3.1

[ddymko]

Description

Release for v0.3.1

Related Issues

#48
#50
#51
#53

Checklist:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you linted your code locally prior to submission?
• Have you successfully ran tests with your changes locally?

[codecov]

Codecov Report

Merging #54 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #54   +/-   ##
=======================================
  Coverage   71.95%   71.95%           
=======================================
  Files          24       24           
  Lines        2664     2664           
=======================================
  Hits         1917     1917           
  Misses        376      376           
  Partials      371      371

Impacted Files	Coverage Δ
govultr.go	85.98% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4d7aa75...f7fbf68. Read the comment docs.