1.0.41: Fixes, fixes, fixes

This release contains a ton of fixes and performance improvements:

What's Changed

• The indexer will now correctly finish its work when indexing accounts/contracts with only one event, see #35
• Reduce the disk requirements drastically (50-75%) by discarding unneeded, raw Txn data: #34
• Remove one memory leak, of potentially a few more: #36

All PRs

• Problem: indexer-example is non-descript and does not run by itself by @MHHukiewitz in #45
• Fix invalid ranges when merging them by @MHHukiewitz in #35
• Fix/indexer backpressure by @MHHukiewitz in #36
• Clean up responses in indexer instances by @MHHukiewitz in #34
• Switch serializer to ProtoBuf for performance improvements by @MHHukiewitz in #28

Full Changelog: v1.0.40...v1.0.41