Updating updaters

Rule 1 of API's: they will eventually break.

  • Updated to CoinMarketCap's API v2
  • Switched reddit API client libraries, as the old one relied on
    endpoints reddit removed recently.

Our live data feed should be fine as secondary clients could be set up quickly. However, it will be harder in the future to get historical reddit data for assets we add. Also, assets can't be quoted in BTC at the moment. Can reenable upon request. I'll come back later this week with news about our recent speed improvements!