1 year deals (textileio#599)

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

bump default deal duration (textileio#597)

- Bump default min deal duration to ~1.5 years.

ipfs: only cache recursive pins & increase timeout (textileio#595)

- Improve IPFS HotStorage pinset caching.

give time to Lotus to calculate fees (textileio#593)

- Give time to Lotus to send funding txns since they might take time.

support Mongo as underlying datastore (textileio#592)

- Add MongoDB support for Datastore.

Arbitrary retrievals preparation & new features and improvements (tex…

…tileio#590)

- Internal improvements and refactors to prepare for enabling new features in the near future.

update Lotus image to v0.7.0

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

Decrease indexing load & fail in unknown Jobs (textileio#589)

- Decrease Lotus load generated by indices.
- Return an error if `WatchJobs` receives an unknown job.

re-enable big sectors (textileio#583)

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

Support Lotus v0.5.3 and latest nerpa (textileio#578)

- Supports latest testnet network (SpaceRace).
- Supports latest nerpa `8.28.0`.
- Changes serialization of keys of retrievals records (breaking change)