cess-miner v0.8.2

Changed

1. Miners are no longer certified idle in non-positive state
2. Only one tee is used when verifying service challenges in batches
3. Upgrade the task scheduling structure
4. Optimize log prompts

Fixed

1. Reconnection may fail when too many RPCs are accessed
2. The challenge has expired but is still being submitted

Full Changelog: v0.8.1...v0.8.2