v0.5.8

This patch includes some bugfixes to the sector sealing process, and updates go-fil-markets. It also improves the performance of blocksync, adds a method to export chain state trees, and improves chainwatch.

Changes

• Upgrade markets to v0.5.9 (#3496)
• Improve blocksync to load fewer messages: (#3494)
• Fix a panic in the ffi-wrapper's ReadPiece (https://github.com/filecoin-project/lotus/pull/3492/files)
• Fix a deadlock in the sealing scheduler (#3489)
• Add test vectors for tipset tests (https://github.com/filecoin-project/lotus/pull/3485/files)
• Improve the advance-block debug command (#3476)
• Add toggle for message processing to Lotus PCR (#3470)
• Allow exporting recent chain state trees (#3463)
• Remove height from chain rand (#3458)
• Disable GC on chain badger datastore (#3457)
• Account for GasPremium in GasEstimateFeeCap (#3456)
• Update go-libp2p-pubsub to master (#3455)
• Chainwatch improvements (#3442)