* correct handleResult() to report transmission errors and stop. Add reporting of line numbers impacted if CSV
* always generate import summary, even if import stops due to error
* pass line numbers to senderThread for potential error reporting.
* move line count from zero based to one based in error report.
* correct warning from Windows build about size_t to int conversion
* correct handleResult() to report transmission errors and stop. Add reporting of line numbers impacted if CSV
* always generate import summary, even if import stops due to error
* pass line numbers to senderThread for potential error reporting.
* move line count from zero based to one based in error report.
* forgot to update CHANGELOG