BUG FIXES:
- fix: recognize references in common nested expressions (#596)
- textDocument/publishDiagnostics: Publish any source-less warnings or errors (#601)
- fix: avoid publishing stale 'validate' diagnostics (#603)
- fix: avoid crash on highlighting unknown tuple element (#605)
- fix: recognize list(object) and set(object) attributes as blocks (#607)
INTERNAL:
- build(deps): bump github.com/creachadair/jrpc2 from 0.19.0 to 0.19.1 (#606)