Bump version number to 0.9.3
Ready for 0.9.4
Prepare 0.9.4
Add a testsuite to test escaped quote in quotes in cookies.

Signed-off-by: Armin Ronacher <armin.ronacher@active-4.com>
bytestring is a sequece of integers in python 3, and integers is not iterable.

Signed-off-by: Armin Ronacher <armin.ronacher@active-4.com>
Added a changelog entry