Make one file uniquely the largest
Slightly refactor the discussion of Lists and Tuples

Try to explain how they’re different and what each
of the two is for.

Also get rid of the line continuation character;
this is a bad place for them.
Some little formatting details

Make sure we always use 2.0 instead of 2.

Add spaces between operators and operands
Merge pull request #68 from njvack/improve-tuples-lists

Slightly refactor the discussion of Lists and Tuples
Merge pull request #69 from njvack/more-detail-fixes

Some little formatting details
Add a little more discussion about indentation and code blocks
Update for python27, also add <kbd> tags
Merge pull request #71 from njvack/update-ipython

Update for python27, also add <kbd> tags
Merge pull request #70 from njvack/white-space

Add a little more discussion about indentation and code blocks
Reorganize to introduce testing after git local. Change exercise to
adding std() function instead of a test.
revise the instructions for the exercise
Merge pull request #72 from kliph/stats-cleanup

Stats cleanup
First round of changes to this lesson.
Update stats and test_stats to new lesson.
Add nose tests
Finish up testing reorg
Move advanced exercise back to end
Introduce nose tests earlier.
Better reference to best practice when introducing nosetests'
Remove work files from repo