feat: add JSON Lines (JSONL/NDJSON) reader/writer#55
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Implements JSONL format support: - Parser: each non-empty line → JSON value, result is always an array - Writer: each array element → one compact JSON line, trailing newline - Empty lines and whitespace-only lines are skipped - Error messages include line numbers for invalid JSON - Mixed types per line supported (objects, arrays, primitives) - CLI integration: -f jsonl/-t jsonl, auto-detect from .jsonl/.ndjson - Comprehensive tests: parsing, serialization, round-trips, edge cases Fixes #26
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Implements JSON Lines (JSONL / NDJSON) format support.
Changes
from_str,from_reader): each non-empty line is parsed as a JSON value; the result is always an arrayto_string): each array element becomes one compact JSON line; non-array values become a single line-f jsonl/-t jsonl, auto-detect from.jsonland.ndjsonextensionsjson_to_valueandvalue_to_jsoninformats::jsonpub(crate)so JSONL can reuse themFixes #26