Indexer 2.8.2 RC

Highlights

• Verify existing database matches algod
• CLI option to provide configuration file with --configfile
• Rollback to earlier golang

Enhancements

• Add CLI option for providing configfile. (#824)
• Add startup check to verify existing DB data matches the algod network. (#833)

Bug Fixes

• Remove duplicate inner transactions from blocks endpoint. (#840)
• Update golint dependency in go mod and sum files. (#844)
• Revert golang 1.16 upgrade (#841)
• Set go-algorand submodule to v3.2.3-stable commit. (#851)