Minor doc fixes.
Initial work on hyperlinks.
Initial work on porting write_url() and tests.
Added tests for URL quoting.
Added write_url() option to generic write() method.
Added write_url() documentation.
Prep for release 0.1.1.
Initial infrastructure work for autofilters.
Initial working autofilter code.
Fix for numeric data interpreted as strings.
First working autofilter() comparison testcase.
Added write_row() and write_col() methods.
Added autofilter comparison tests.
Added autofilter example program.
Prep for release 0.1.2.
Fixed some typos in the documentation.
Updated compatibility docs.
Added tab_color() and right_to_left() worksheet methods.
Updated docs for new worksheet methods.
Prep for release 0.1.3.