Nbstripout

* Make nbstripout package executable and fix regression (94)
* Add package docstring

* Fix `WindowsError` not defined on POSIX systems (90)
* Add support for blacklisting custom metatdata fields (92, casperdcl)

* 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)

* Gracefully deal with empty/malformed input 66
* Add Code of Conduct 63
* Add MANIFEST.in 64
* Document `git filter-branch` use case in README (28, belteshassar)
* Flush output when using `-t` (67, tnilanon)
* Add `nbformat` and `setuptools >= 30` to `setup_requires` (67, tnilanon)
* Use `travis_retry` (67, tnilanon)
* Drop support for Python 3.3 (no longer supported by setuptools)

* Add option `-t`/`--textconv` to write to stdout e.g. for use as diff filter (53, utsekaj42)
* Flush output stream after write (55, reidpr)
* Add options `--keep-count` and `--keep-output` to no strip execution counts and output (56, jpeacock29)
* Fix shell pipeline documentation (59, psthomas)
* Catch `WindowsError` when `git` is not found in PATH (62, bdforbes)

* Support whitespace in repository paths (47, 48, ehoepfner)
* Also ignore `collapsed` and `scrolled` metadata (34)
* Define `NO_CONVERT` for IPython <3 import (46)