Release v0.19.0

[thanethomson]

📖 CHANGELOG rendered

• Referenced an issue explaining the need for the change
• Updated all relevant documentation in docs
• Updated all code comments where relevant
• Wrote tests
• Updated CHANGELOG.md

[thanethomson]

Converting this back to draft for now until I resolve the rust-peg issue in the tendermint-rpc crate 😞

[codecov-io]

Codecov Report

Merging #854 (2cdab92) into master (d1c8877) will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master    #854   +/-   ##
======================================
  Coverage    67.1%   67.1%           
======================================
  Files         211     211           
  Lines       17026   17030    +4     
======================================
+ Hits        11427   11430    +3     
- Misses       5599    5600    +1     

Impacted Files	Coverage Δ
light-client/src/lib.rs	100.0% <ø> (ø)
light-node/src/lib.rs	100.0% <ø> (ø)
p2p/src/lib.rs	100.0% <ø> (ø)
proto/src/lib.rs	100.0% <ø> (ø)
rpc/src/client.rs	16.9% <ø> (ø)
tendermint/src/lib.rs	100.0% <ø> (ø)
light-client-js/src/lib.rs	6.6% <100.0%> (ø)
rpc/src/endpoint/genesis.rs	40.0% <0.0%> (-60.0%)	⬇️
rpc/src/endpoint/health.rs	20.0% <0.0%> (-30.0%)	⬇️
tendermint/src/signature.rs	56.4% <0.0%> (-4.2%)	⬇️
... and 12 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d1c8877...2cdab92. Read the comment docs.