csv/parse-stream: syntax error handling

**Is your feature request related to a problem? Please describe.**

I want to watch a CSV file and recompute some statistics each time it changes. Sometimes the last record is incomplete:

```
Error: Syntax error on line 156: The record has 2 fields, but the header has 4 fields
```

**Describe the solution you'd like**

A way to handle syntax errors and continue parsing the stream rather than throwing and halting stream parsing.

e.g. `onSyntaxError()` option to the `CsvParseStream` constructor. The function can return a completed record or return something like `undefined` to skip the record.

**Describe alternatives you've considered**

Building my own stream transforming to detect an incomplete last line and not pipe it through to the `CsvParseStream` instance.