Ardent: download ældre versioner

• **Breaking Change** the `completions` subcommand is now a flag (`--completions`)
• various improvements

- fix: treat a lone CR as a line break in continuations and block comments
- fix: keep mid and closeAfter keywords attached to their blocks
- fix: return empty output for empty input
- fix: exclude trailing comments from line width
- fix: keep unknown compiler commands as written
- fix: strip trailing whitespace from comments
- fix: join continuation lines without inserting a space
- fix: treat `;` and `#` inside tokens as part of the token
- fix: keep piped values compact when wrapping lines
- fix!: keep byte order mark when writing files
- fix: conform to spec on unterminated strings, unknown keywords and block comments
- fix: remove `!elseif`

• fix：update `!else` handling

- fixed: Windows builds no longer require the Visual C++ redistributable
- chore: update dependencies