influxdata-plugin-utils 0.2.0

• write_data: add optional database parameter for writing to another database
• write_data: no_sync now defaults to None — writes go through write / write_to_db (available on all InfluxDB 3 versions); passing a boolean switches to write_sync /
  write_sync_to_db (InfluxDB 3.8+)
• write_data: hoist write-method selection out of the retry loop; document that retries only apply when no_sync is set (buffered write never raises)
• parse_timedelta: add ms (milliseconds) and us (microseconds) units
• Bump package version to 0.2.0, update CHANGELOG and README