merge coupdaybs, coupdays, coupdaysnc, coupncd, coupnum, couppcd #59

base/src/test/mod.rs

@@ -18,6 +18,7 @@ mod test_fn_averageifs;
 mod test_fn_choose;
 mod test_fn_concatenate;
 mod test_fn_count;
+mod test_fn_coupon;
 mod test_fn_day;
 mod test_fn_duration;
 mod test_fn_exact;