test => empty data
test => one row data
test => column out of bounds
refactoring => remove redundant statement
test => multi rows
test => drop empty rows
refactoring => remove redundant statement
Merge branch 'grab_csv_columns' into master
add test into all-tests.html
test => empty dice
test => one dice
test => dice are different
test => three same dice
test => mixed
refactoring => remove redundant statement
add missing test
Merge branch 'greed_is_good' into master
add test into all-tests.html