Vcsn 2.8

Vcsn 2.7

This is the second tag for 2.7, but the Vcsn 2.7 was not announced,
nor pushed to Docker hub.

Vcsn 2.9 is not a release, it marks the begining of the work for Vcsn 3.0.

Vcsn 2.6.

Vcsn 2.5.

Vcsn 2.4.

Vcsn 2.3

Vcsn 2.2

Vcsn 2.1.

vaucanson-2.0

v2b.3

v2b.2

v2b.1

vaucanson-2b.0

Initial commit.