venus market v2 - multi miner support

venus-market v2 enables itself to be deployed as an integral part of venus chain service, which freeing storage providers from managing data transfer from different clients but have venus-market as storage provider’s designated destination for deal data. Once data is retrieved from venus-market, venus-sealer will start sealing the deal without the need of deploying venus-market locally on storage provider’s side.

What's Changed

1. support mysql storage for venus-market
2. support piece storage for sealer/retrieval
3. support multiple miner

Full Changelog: v1.0.1...v2.0.0-rc1

v1.0.1

What's Changed

• update venus by @hunjixin in #4

Full Changelog: v1.0.0...v1.0.1

v1.0.0

update venus