Bug#1070366: sagenb-export: please package v3.4 and drop python3-six dependency

[Alexandre Detiste]

Source: sagenb-export
Version: 3.2-4
Severity: normal

Dear Maintainers,

please package v3.4 and drop python3-six dependency

https://github.com/vbraun/ExportSageNB/pull/20

https://wiki.debian.org/Python3-six-removal

Greetings