Fix vincentlaucsb#142 & update single header csv.hpp

CSV Parser 2.1.0 (vincentlaucsb#131)

* Update csv_row.cpp

* Simplified handling of quoted fields

* Added tokenizer

* Some minor code clean up

* Update raw_csv_data.hpp

* Some more code clean up

* Added thread safety test

* read_csv() now makes calls that are aligned to the CSV

* Added more CSV writer specializations

* Update test_round_trip.cpp

* Update test_round_trip.cpp

* Simplified CSVWriter

* Update csv_writer.hpp

* Updated docs

* Some code clean up

* Changed how custom types are serialized

* Update csv_writer.hpp

* Attempt to make BasicCSVParser no-copy

* Created different basic_csv_parser specializations

* Got CSVGuessing working again

* Got round trip test working again

* Got more tests working again

* Fixed some failing tests

* Most unit tests working again

* CSVStat no longer inherits from CSVReader

* Update single header

* Code clean up

* More code clean up

* Fix CSVStat segfault

* Fixed bug in parse_loop() & c++11 compatibility issues

* Fixed g++-6 compatibility

* Added some optimizations

* Code clean up

* Added CSVReader constructor over an ifstream

* Attempt to fix ifstream parsing

* Fixed std::ifstream parsing

* Added more comments

* Fixed a bunch of warnings

* Last update of docs

* Update README.md

Small oops

Fix merge conflict

CSV Parser 2.0.0 Beta (vincentlaucsb#126)

* Added initial work for internal parser rewrite

* Fixed issue with quoted fields

* Added new tests for fragment stitching

* Added ability to piece together fragments

* New internal CSV parser works

* Refactored CSV guessing to use new parser

* Added some optimizations

* Refactored to use old style loop

* Added some micro-optimizations

* Added some more micro-optimizations

* Simplified switch statement

* Fixed some bugs with quote handling

* Fixed more quoting issues

* Simplified main parse loop

* Update raw_csv_data.cpp

* Added memory mapped IO

* Some more code clean up

* Added dynamic array for storing RawCSVFields

* Most unit tests passing again

* Fixed bug with incomplete fragments

* Fixed read_csv main loop

* CSVRow tests work again

* Update csv_reader_internals.cpp

* Fixed some warnings

* Added more test cases

* Fixed some segfaults

* Updated README and single header

* Updated single header file

* Add reference to cstdlib

Fixed crash that occurred when parsing large files (vincentlaucsb#98)

* Upload experimental fix

* Added testing for no_quote()

* Bump version number

* Revert "Bump version number"

This reverts commit bd501d4.

* Revert "Added testing for no_quote()"

This reverts commit 8c38938.

* Added ability to turn off quoting

Fix issue parsing very long rows (vincentlaucsb#95)

* Added some scratch work

* Added tests of long CSV rows

* Update single header files

Added patch for whitespace trimming (vincentlaucsb#94)

* Fix issue with whitespace parsing

* Update Catch + added more test cases

* Update test_read_csv.cpp

* Update CMake settings

* Update version + single header files

* Update README.md

Woops 🐵

Woops 🐵