momentjs:moment upgraded from 2.10.6 to 2.11.0

Reduce build time

correct typo

attempt to save build time

Shorten build time

Hoping to shorten build time

attempt to speed up build

best effort attempt until jason becomes available next week

remove old add-platform

test to see if glitch is fixed

There's a bug (feature?) in Sandstorm that prevents spks with an
improper PGP signature from being installed. This change produces an
spk without PGP signatures, and the future `spk repack` command will
allow you to add/change the PGP signatures in addition to changing app id.