size and leading of the headings. 
* Added a function to trim spaces from the \cite keys list (so now \cite{key1,
  key2,   key3} works fine.  (See issue 21.)
* Switched the \section and \subsection code to use titlesec.
* Added some more documentation to the sample-book file.  


git-svn-id: https://tufte-latex.googlecode.com/svn/trunk@91 516e2f36-ce3a-0410-bea4-1d4a03f5df72

* Multiple citations are now typeset in a single sidenote instead of multiple
  sidenotes.  This is how Tufte appears to handle them in his book and it will
  save us a lot of vertical space in the sidenote column.


git-svn-id: https://tufte-latex.googlecode.com/svn/trunk@78 516e2f36-ce3a-0410-bea4-1d4a03f5df72

\sidenote[num][dimension]{Sidenote text.} where ``num'' is the sidenote
  number and ``dimension'' is the amount of space to move the sidenote down the
  page.   (Negative values will move the sidenote up the page.)


git-svn-id: https://tufte-latex.googlecode.com/svn/trunk@73 516e2f36-ce3a-0410-bea4-1d4a03f5df72

* Created a new tufte-book document class.
* Moved most of the tufte-handout code into a tufte-common.sty file.
* The tufte-handout.cls and tufte-book.cls files now include
  tufte-common.sty.
* No documentation for the new stuff yet -- read the code.
* The tufte-book class is very much unfinished -- I've only just started.
* Bugs abound!


git-svn-id: https://tufte-latex.googlecode.com/svn/trunk@63 516e2f36-ce3a-0410-bea4-1d4a03f5df72