Link notes:
https://steemit.com/hf21/@timcliff/hardfork-21-steem-proposal-system-sps-economic-improvement-proposal-eip
https://steemit.com/blocktrades/@blocktrades/proposing-a-worker-proposal-system-for-steem
https://steemit.com/steemdao/@blocktrades/update-on-steem-proposal-system-steeem-dao --Steemcenterwiki (talk) 16:40, 9 July 2019 (EDT)
