* Switches to sqlite and remove all mongo stuff
* Starts RPC server on port 8555
* UI is in new process, communicates to node through rpc
* JSON serialization for streamables
* Harvester periodically prints its plot names and sizes
* Process names are set to chia_full node, chia_harvester, etc
* CONTRIBUTING.md, and remove docs from git (put in wiki)
* Adds the SmallHeaderBlock type, it's header block without the PoT and PoSpace
* Fix harvester bug (allows two harvesters in the same machine)
* Sync changes
* Add recent peer threshold to full node
* Change farmer to weight instead of height
* Remove asyncio cancel, and add visibility of farming rewards
* Added a new API call GetAllHeaderHashes which returns just the header hashes. This is used for finding fork point.
* Only downloads headers and blocks from fork point
* Remove CancelledError logging
* Short sync should now work properly, it will always ask for previous block. There might be some repeated requests.
* Introducer now only returns peers which it has seen recently, and full node only connects to peers which it has heard from recently.