tower-lsp 0.20.0

Added

• Add support for pull-based diagnostics from LSP 3.17.0 (PR #396).
  • Implement textDocument/diagnostic server request.
  • Implement workspace/diagnostic server request.
  • Implement workspace/diagnostic/refresh client request.
• Implement std::str::FromStr for jsonrpc::{Request,Response} (PR #379).
• Implement From<jsonrpc::ErrorCode> for i64 (PR #379).
• Document supported LSP features in FEATURES.md matrix (PR #382, PR #383).

Changed

• Bump minimum supported Rust version from 1.52.0 to 1.64.0 (PR #377, PR #395).
• Update lsp-types from 0.94 to 0.94.1 (PR #396).
• Update syn from 1 to 2 (PR #390).
• Update dev-dependency async-tungstenite from 0.18 to 0.22 (PR #395).
• Update dev-dependency ws_stream_tungstenite from 0.9 to 0.10 (PR #395).
• Optimize JSON-RPC deserialization types.
  • Change jsonrpc::Error::message field to Cow<'static, str> (PR #378).
  • Mark several methods on jsonrpc::Error as const fn (PR #378).
  • Mark all methods on jsonrpc::ErrorCode as const fn (PR #378).
  • Avoid heap allocation in version field deserialization (PR #379).

Fixed

• Fix broken Markdown in doc comment for LanguageServer::completion() (PR #396).