etl

76c7c1a1 - Merge branch 'feature/#596-helper-functions-to-convert-strings-to-numeric-values' of https://github.com/ETLCPP/etl into feature/#596-helper-functions-to-convert-strings-to-numeric-values

Merge branch 'feature/#596-helper-functions-to-convert-strings-to-numeric-values' of https://github.com/ETLCPP/etl into feature/#596-helper-functions-to-convert-strings-to-numeric-values # Conflicts: # include/etl/file_error_numbers.h # include/etl/to_arithmetic.h # test/vs2019/etl.vcxproj.filters