[ANNOUNCE] 409k

[Pyry Kovanen]

%base hash (check with +vats %base, =verb %.y): 0v19.n4cpn.0d8d1.693uf.8anru.6fih8.o9cdo.rm1js.tuje0.os701.6kehr

409 is on ~zod and propagating across the network now. Here are some of the highlighted features:

* Significantly reduce unnecessary packet spam on the network

* Enable the quickboot brass pill for orders of magnitude faster initial boot

* Stateful urwasm, expanding on the stateless urwasm capabilities released in 410

* Enable the spin hint for ship performance monitoring

And one more feature that I forgot to mention in the vere-v4.0 release notes:

* Enable 16 gigabyte loom with the --loom 34 command-line argument

For full release notes see https://github.com/urbit/urbit/releases/tag/409k