[mnemosyne] Pushed amd64 stabilisation back 90 days

Waiting for stabilisation of kid.
[mnemosyne] Pushed x86 stabilisation back 45 days

Waiting for stabilisation of kid.
[flake8] 2.0 keyworded amd64

Package-Manager: portage-2.1.12.2
Manifest-Sign-Key: C0174749