v1.0.0

2021 Edition & Dependency Bumps

• 2018 -> 2021 because the dep updates appeared to generate code relying
  on TryInto's prelude presence
• bumped tonic & tonic-build from 0.8 -> 0.10.2
• bumped prost from 0.11 -> 0.12.3
• bumped prost-types from 0.11 -> 0.12.3
• bumped async-stream from 0.3 to 0.3.5
• bumped tokio from 1.5 to 1.34.0, added macros feature to fix
  resulting compilation errors

Thanks a lot to @rossproduct!