Full documentation of StatusEvent webhook here:
https://developer.github.com/v3/activity/events/types/#statusevent

Use RepositoryCommit type for Commit field in StatusEvent.

Fixes #448.
Closes #449.

Change-Id: I9a2936a1893f50c3b507f6f295428db85ecf932b

Use Timestamp type for GistCommit CommitedAt field.
Add support for ListForks endpoint.
Add missing fields for GistCommit and GistFork types.

Closes #385.

Change-Id: If1379d83173d52c974bb5834a834d97aee2f0ad8

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

this is a breaking change for a handful of Option structs that were
defining the Page option directly (they now embed ListOptions).

finishes fixing #56

this change also includes some additional minor code cleanup

fixes #58