Enhancements:
- Use old, but non-deprecated TimestampFormatter API to support embulk < 0.8.29
Changes:
- Support new TimestampFormatter API of embulk >= 0.8.29
- Note that this plugin requires embulk >= 0.8.29 now
Changes:
- Rename message_key option to column_name option
Fixes:
- Fix gemspec
Fixes:
- Fix for cases there are multiple input columns
Initial release