Previously, the test would pass if got and want were different, and
fail if they were equal.

Closes #491.

Change-Id: Ie9b0059595ef85777613578b06c98c10104f4e6a

Add blob_url, raw_url, contents_url in CommitFile struct.
Updates #419

Signed-off-by: Daehyeok Mun <daehyeok@gmail.com>

Note that this is an API-breaking change but should have minimal
impact on users of this package due to the nice inference
properties of the Go programming language.

Bumped `libraryVersion` to `2` due to API-breaking change as
discussed in #376.

Fixes #180.

Change-Id: Ib386135e6b8f306d1f54278968c576f3ceccc4e7

Fixes #334.

Change-Id: I9b10ae5e7679f5196778d9eb3ded6168d7facfc3

See: https://developer.github.com/changes/2016-04-12-commit-reference-sha-api-is-now-official/

Fixes #297.

Change-Id: I9cc3c4a2e143c6b3ca4677d8d27ea7af96341dd9

Fixes #297
Fixes #298

Change-Id: Ib17c43b368a0d0ee1a33690c17ad7c0f4dab55e5