Prepare 1.5.3 release.

Prepare 1.5.2 release.

Disable persistence for test_self.

Restrict astroid to 1.3.8

--HG--
branch : 1.4.4

Drop any reference for logilab-common from the documentation. Update …

…the contribution section for newer practices regarding testing.

Update the version to 1.4.4

--HG--
branch : 1.4.4

Prepare 1.4.3 release.

Prepare 1.4.2 release

Prepare the release.

Prepare the 1.4.0 release.