readTree now takes a SHA in options, and throws a NotModifiedError if the SHA matches with the latest commit SHA on the tree. readTree response now contains a new 'sha' parameter.
Also, the default branch will now be used if no branch is provided in the url's target
It is time to start using URL Reader for the exmaple docs components we provide in the out-of-the-box experience (i.e. when users experience TechDocs by doing a git clone of this repository).
URL Reader makes the prepare step 8x faster.