droplet size historical notes

Full list of sizes: https://slugs.do-api.dev/

These comments were removed from wither.rb, and the size moved to a constant at the top of the file. via commit: 11579d4

# We seem to need more than 8GB minimum, FWIW.
#	size: '32GB',
#        size: 'c-2',
# 6cpu, 16gb standard config, per https://slugs.do-api.dev/
#	size: 's-6vcpu-16gb',
# 2cpu, 16gb memory optimized, with x3 disk size
#	size: 'm3-2vcpu-16gb',
# We also seem to need more than 2cpus. Also just slightly more than 16gb but here we are.
# 4cpu, 16gb general-purpose, just 50gb

# current as of 24-Oct-2020
size: 'g-4vcpu-16gb',