also:
* updated rubocop and applied styling
* made small test refactorings (using the expect block notation)
* made a small refactor to remove an unnecessary ``return credentials``
* bumped the version
- ServiceAccountCredentials, ServiceAccountJwtHeaderCredentials
and UserRefreshCredentials initializers now take keyword args
via options hash.
- In `credentials_loader.rb`, refactored env var checking into
private methods
- Updated tests & added new tests.
- Fixed existing test for #from_well_known_path 'fails if
the file is invalid', where `from_env` was called instead of
`from_well_known_path`.
- Fixed rubocop errors I introduced, but two existing ones remain.
- Added entry to changelog.
- Fixed rubocop errors from code containing parallel assignments
- Updated rubocop_todo.yml to ignore parallel assignments and
trailing underscore assignments.
Graham Paye
Chris Smith
Graham Paye
Daniel Azuma
Tadas Tamošauskas
Thea Flowers
Heng Xiong
Heng Xiong
Kazuhiro Serizawa
nicholas shook
Steven Bazyl
David Wilkie
Herbert Siojo
Tim Emiola