performance improvements

improve performance
improve stability for net standard

memory and performance optimization

optimize reader memory use
add net35, net45 and net48 specific support
supports both CR and LF in quoted values
performance improvements

Fix potential bug and improve performance

1. performance improvement
2. fix a potential bug that reader may not read all data
3. support line feed (LF) as line break if not quoted
4. support skip duplicate lines

performance improvement

Improve performance of CsvReader

Add more options to enhance CSV reader/writer

support skipping file header line in reader
support skipping comment lines in reader
support skipping empty lines for reader and writer
support appending to existing files in writer
support reading current line/row/record index

Add generic data resolver to support reading/writing objects

Add a customizable data resolver to support reading/writing objects.

Initial release

Add basic support for reading and writing CSV files.

Each row in CSV a file will be read as list of Strings, and you also write list of Strings when using CsvWriter.

Provide some reader and writer settings in the CsvReaderSettings and CsvWriterSettings.

Default encoding used is Encoding.Default and default field seperator is comma (,).