Add git-hooks install script. Update README.md
Remove the octavemagic extension.

It is part of oct2py, so we can stop testing and documenting it now.
check for Python 3.2

in setup.py and init

treats unsupported 3.x < 3.3 like unsupported 2.x
remove inappropriate wheel tag override

I misunderstood how these tags are interpreted.
We do not want `py2` and `py3`, we want `py27` and `py33`,
which indicate >= matching in the minor version.

This means we should build wheels with the minimum supported Python.
Fix ipconfig regex pattern

As suggested by @andjoely. Should be tested by Windows users without
netifaces installed.

Closes gh-5491
do not shutdown notebook if 'n' is part of answer

this prevents commands like 'yesn' to shut down the notebook server
FileNotebookManager: Use shutil.move() instead of os.rename()

`os.rename()` fails in case the new path is on a different
filesystem. For example if a file in `/tmp` is tried to save
to home, it causes following error:

[Errno 18] Invalid cross-device link using os.rename
Don't remove upload items unless explicitly requested.
never use `for (var i in array)`

because javascript is terrible
one more place
Merge pull request #5524 from minrk/no-in-array

never use `for (var i in array)`
Merge pull request #5548 from pankajp/notebook-rename-cross-device-link

FileNotebookManager: Use shutil.move() instead of os.rename()
Merge pull request #5501 from minrk/wheel-tags

remove inappropriate wheel tag override
Merge pull request #5497 from takluyver/rm-octavemagic

Remove the octavemagic extension.
master is 3.0.0-dev
Merge pull request #5527 from jdfreder/i5518

Don't remove upload items from nav tree unless explicitly requested.
Merge pull request #5546 from renaud/master

do not shutdown notebook if 'n' is part of answer
Merge pull request #5478 from cowlicks/git-hooks

Add git-hooks install script. Update README.md
only process cr if it's found

because re.sub is crazy slow.
Merge pull request #5576 from minrk/re.sub-is-crazy-slow

only process cr if it's found