yext/go-github — pull request #2 by jfancher (2014-09-03 14:25:50+00:00)
Title: Adding omitempty to base_tree in CreateTree API

A recent update to the GitHub API changed some undocumented behavior. Previously a nonexistent base_tree and an empty string base_tree were treated the same, but now the empty string case will fail with "422 base_tree is not a valid oid".