add rolename field to user struct

[joshua-hancox]

As a follow on from this PR - I also need to be able to access the role_name returned from the Repositories.ListCollaborators endpoint, and therefore have raised this PR to include the field in the user struct.

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[codecov]

Codecov Report

Merging #2386 (7d99f0c) into master (74c4599) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2386   +/-   ##
=======================================
  Coverage   98.06%   98.06%           
=======================================
  Files         119      119           
  Lines       10545    10545           
=======================================
  Hits        10341    10341           
  Misses        140      140           
  Partials       64       64           

Impacted Files	Coverage Δ
github/users.go	94.17% <ø> (ø)

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[gmlewis]

Thank you, @joshua-hancox !
LGTM.
Merging.

[joshua-hancox]

Hey @gmlewis - any chance we could get a release with this functionality?

[gmlewis]

Hey @gmlewis - any chance we could get a release with this functionality?

Hi @joshua-hancox - yes, this is now included in v45.2.0:
https://github.com/google/go-github/releases/tag/v45.2.0