Checklist for 1.0 release

[jeffesquivels]

This is the checklist of pending items/bugs/tasks that need to be addressed in order to release a 1.0 version:

• [x] Looking into networking layer improvements in albatross and backporting anything that makes sense
• [x] Make sure TLS termination works properly with our current mainnet infrastructure setup
• [x] Backport the updated GitLab CI config from albatross
• [x] Fix bug where incomplete AccountsProof are sent
• [x] Code cleanup (warnings during compilation, etc.)
• [ ] Support https for the metrics server
• [ ] Make sure the name of metrics in Rust match those in JavaScript

[jgraef]

• [x] Update README
• [x] Update comments in example config file

[jgraef]

I don't think we can use PEM files for the TLS certificates as native_tls haven't finished that feature yet[1]

[1] https://github.com/sfackler/rust-native-tls/issues/27

[jeffesquivels]

I don't think we can use PEM files for the TLS certificates as native_tls haven't finished that feature yet[1]

[1] sfackler/rust-native-tls#27

I moved this to #41 so that it can be tracked and fixed post-release.