Update copyright year in LICENSE-MIT

Bump tower-lsp version to 0.19.0

Bump tower-lsp-macros version to 0.7.0

Update CHANGELOG.md

Add @silvanshade as crate coauthor

Update CHANGELOG.md

Update CHANGELOG.md

Bump crate version to 0.14.1

Move CHANGELOG.md bullet from Fixed to Changed

Bump crate version to 0.13.3