Upgrade main branch to Vert.x 4

[DavideD]

@gavinking, @Sanne: Could you confirm me that we can do this?

[gavinking]

+1

[Sanne]

+1

…

On Fri, 9 Apr 2021, 10:56 Gavin King, ***@***.***> wrote: +1 — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#689 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAKMTPL7SAW7BWDKH3NKUTTH3FNTANCNFSM42UUI5RA> .