v0.3.3 (2018-08-04)

• Distribute tests in source package (#73 #76, @jluttine)
• Fix git diff tests for newer Git versions (#74 #76, @jluttine)
• Install full path for diff.ipynb.textconv (#68 #82, @ibressler)
• Make sure sys.stdin is not None before reading from it (#68 #82, @ibressler)