Can we release 4.0.1? :)

[Maxim Solodovnik]

Hello All,

can we release current `master` as 4.0.1?
(there are couple of unresolved issues, but I seems to not have enough
time to investigate :((( )

@Francesco Chicchiriccò may be you can act as RM? :)

-- 
Best regards,
Maxim