Change package source name

[Yadd <yadd@debian.org>]

Hi all,

I just pushed to experimental node-regenerator (via NEW queue, thanks to 
ftpmasters!) which replaces two packages still existing in unstable: 
node-regenerator-runtime and node-regenerator-transform. These packages 
were downloaded from npm registry but the real source repository is 
node-regenerator which builds 4 packages.

I also filed two BTS-ROM-RM against these two old packages.

My question is about this transition. What is the process, wait for old 
packages removals then push node-regenerator to unstable or can I push 
directly node-regenerator to unstable?

Note that node-regenerator-runtime and node-regenerator-transform have 
reverse dependencies (many via node-babel7...).

Cheers,
Yadd