remove duplicate typedef for dash_array
enable other test from #2349
csv plugin: support conversion to boolean types - closes #1540
csv: parse true/false as boolean in csv plugin - closes #1540
adapt csv tests to boolean change - refs #1540
Add string2bool test
stricter string2bool conversion - refs #2348
update visual tests after fix in 04e4b47 - refs #2348
add visual test confirming ttc are read okay - refs #2274