Prepare for 0.9.3 release.
Enable automated testing with Python 3.4
Merge pull request #110 from frewsxcv/patch-1

Enable automated testing with Python 3.4
Merge branch 'master' of github.com:python-excel/xlrd
Fix for forward slash file separator and lowercase names.

Workaround for some third party files that use forward slashes and
lower case names. It maps the expected name in lowercase to the
actual filename in the zip container.

Fix for the issues in #96 and #101.