Allow xunit and coverage output
Better coverage reporting
Fix debugger doctest
Fix travis iptest call
cd to /tmp in Travis for tests
Also show which test groups didn't run
Separate TestController base class which could be used for JS tests
Fix iptest setuptools entry point
Fix printing test failures on Python 3
Allow drilling down to individual tests using iptest command
Make debugger doctest more remote.

Depending on whether or not __main__ is set to a real module, there may
or may not be a 'File: ' line in the pinfo output. This differs
according to whether tests were run directly or via a subprocess using
'python -c', so we use the doctest ellipsis to ignore the difference.
Allow 'iptest IPython.lib' as well as 'iptest lib'
Unify entry points for iptest
Simplify parsing -j arg
add nbconvert serve exclusions without tornado
Merge pull request #4180 from takluyver/iptest-refactor

Iptest refactoring
Changes to Alias API after discussion with Fernando
make timeit optionally return an object

-o now allow to return an object that contains raw result of timeit magic
for later use.

-q make the timeit magic not print anything (quiet)
Merge pull request #4224 from minrk/clear_callbacks

clear previous callbacks on execute
Updated clear_output animation example nb