chore: Release cargo-thanku version 0.5.1

build(Cargo.toml): add release profile optimizations

chore: Release cargo-thanku version 0.5.0

refactor(config): remove redundant newline in file opening logic

fix(cli): improve error handling and parsing logic

fix(sources): fix GitHub API client with proper headers and error handling

enhance(output): implement buffered parsing for CSV and Markdown formatters

Refactor and enhance testing structure

feat(output): introduce markdown tokenizer for robust list parsing

refactor(app): restructure application into modular architecture

Update dependencies in Cargo.toml and add TODO.md for project optimization tasks

chore: Release cargo-thanku version 0.4.3

feat(i18n, output): add multilingual support and output formats

refactor(cli, output): update cli and output modules

chore: Release cargo-thanku version 0.4.2