Add Surface3DChart support
Make testable

--HG--
branch : 1.9
Add a profile for checking memoery use.

--HG--
branch : 1.9
lxml now a test dependency.

--HG--
branch : 1.9
Make sure test does something

--HG--
branch : 1.9
More extensive checking of the range.

--HG--
branch : 1.9
Environmental variables are always strings. Thanks to John Bovey for pointing this out.

--HG--
branch : 1.9
Merge Thomas Viehmann’s work with updated trunk.
Stub implementation for a dedicated class for handling shared formulae

--HG--
branch : 1.9
Resolves #246

--HG--
branch : 1.8
Merge in 1.8.1
Added tag 1.8.1 for changeset 6f91d07c4fbb
Merge in 1.8.1

--HG--
branch : 1.9
Exclude any tests that may come with patch submissions.

--HG--
branch : 1.9
Update docs.

--HG--
branch : 1.9
Add filterColumn, sortCondition support to AutoFilter.

--HG--
branch : 1.9
Merged in shibu/openpyxl/1.9 (pull request #70)

Add filterColumn, sortCondition support to AutoFilter

--HG--
branch : 1.9
Update docs and authors

--HG--
branch : 1.9
Update copyright

--HG--
branch : 1.9
Break cells into separate package.

--HG--
branch : 1.9
rename : openpyxl/cell.py => openpyxl/cells/cell.py