Dict tests now pass
backup
initial attempt at switching to a const char * dict
passes all tests
go back to using strings in the dictionary to avoid the memory leaks
add return vals for getProps on ROMol, Atom, and Bond;
use a variable to store computed prop names
start using the alternate getProp form
customizable drawing options
small bugfix
Merge pull request #74 from rdkit/DictImprovements_15July2013

Dict improvements 15 july2013
Fixes #75
fix unit test when sping is not present
actually import sping for its tests
Merge pull request #76 from giallu/master

fix unit test when sping is not present
Fixes #68
Note that the molecules that are produced are still definitely
  not chemically sensible, but the InChI processing at least
  no longer hangs
do not install the _build directory in docs
Merge branch 'master' of git://github.com/mnowotka/rdkit into mnowotka-master
switch to using a class for the options instead of a dictionary
Fixes #78
This does not address the non-canonical rendering piece -- that will
be considerably more work -- but it does take care of the
epoxides being rendered inside the ring.
Support for cairocffi (cairo drop-in replacement that plays nicely with virtualenv)