tree 62c96b9b06617f12434edd01b45c6131536a4a3a
parent 4147a9cc347810bb38b6a56c0cf98a9d2f6e3ab6
author Natalie Weizenbaum <nweiz@google.com> 1510002138 -0800
committer Natalie Weizenbaum <nweiz@google.com> 1510085347 -0800

Add changeExtension()

Closes #32