Set neo4j publisher CSV field_size_limit to max (#143)

* set field_size_limit to max

* fix lint

* increase version

* update

databuilder/publisher/neo4j_csv_publisher.py

 import copy
 import csv
+import ctypes
 import logging
 import time
 from os import listdir
@@ -16,6 +17,11 @@ from databuilder.publisher.base_publisher import Publisher
 from databuilder.publisher.neo4j_preprocessor import NoopRelationPreprocessor
 
 
+# Setting field_size_limit to solve the error below
+# _csv.Error: field larger than field limit (131072)
+# https://stackoverflow.com/a/54517228/5972935
+csv.field_size_limit(int(ctypes.c_ulong(-1).value // 2))
+
 # Config keys
 # A directory that contains CSV files for nodes
 NODE_FILES_DIR = 'node_files_directory'

setup.py

@@ -2,7 +2,7 @@ import os
 from setuptools import setup, find_packages
 
 
-__version__ = '1.4.4'
+__version__ = '1.4.5'
 
 
 requirements_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'requirements.txt')