Add all the params here as undef to make it clear what the intent is.
Merge pull request #296 from apenney/fix/add-providers-to-params

Add all the params here as undef to make it clear what the intent is.
Prepare 2.0.0-rc1 release.
Merge pull request #297 from apenney/200-release

Prepare 2.0.0-rc1 release.
Duplicate parameter removed.
Merge pull request #298 from apenney/fix-duplicate

Duplicate parameter removed.
Prepare a 2.0.0-rc2 release.
Merge pull request #299 from apenney/200-rc2-release

Prepare a 2.0.0-rc2 release.