log user tracebacks in the kernel (INFO-level)
try to fallback to pysqlite2.dbapi2 as sqlite3

for situations where Python is built without sqlite3 and
can not easily be changed, it would be nice to still be
able to get history with pysqlite2.
Add shell_futures parameter to run_cell to allow running code without sharing __future__ imports.
this should address the failure in #2732

i am still very concerned that I can't test this on windows - I'm not used to developing for windows, so not sure that these links will work even if the test passes on windows.

is there a good AWS AMI to use for windows testing? i can run this in my own AWS account.
Test __future__ environments
Better support compiling cells with separate __future__ environments
Fix unrelated test.

nose.tools no longer has a fail() function
Fixing styling issues with CellToolbar.

* Width of CellToolbar was off on Linux Chrome+Firefox.
* Minor styling cleanups.
gshow
Further cleanup for celltoolbars.
Minor tweaks to the css to enable single cell hide/show.
Decoupling the celltoolbar select UI from CellToolbar.

The select menu for celltoolbar presets should live entirely in
the maintoolbar code - it was 1/2 in CellToolbar itself. This
fixes this issue using events and an additional method on
CellToolbar (list_presets).
skip ipc tests on Windows

ipc doesn't work on Windows
Removing unneeded ui-widget class.
Merge pull request #2789 from ellisonbg/celltoolbar-style

Fixing styling issues with CellToolbar.
Merge pull request #2804 from minrk/windows_noipc

skip ipc tests on Windows

ZeroMQ doesn't support ipc on Windows
Merge pull request #1671 from takluyver/back-to-the-future

__future__ environments
improve patience for slow Hub in client tests

adds a first step in `_wait_for_idle`,
where it waits for all tasks to arrive before waiting for
no tasks to be running.  On a super slow machine,
it was possible for `_wait_for_idle` to return prematurely,
before tasks had even started.

ought to close #2807
complete builtin and cython with embededsignature=True
by parsing first line of docstring
docstring for _default_arguments_from_docstring