Add additional tests for match

test/match.nim

@@ -0,0 +1,6 @@
+include nre, unittest
+
+suite "match":
+  test "upper bound must be exclusive":
+    check("abc".match(re"abc", endpos = 0) == nil)
+    check("abc".match(re"abc", endpos = 3) != nil)

test/testall.nim

@@ -3,3 +3,4 @@ import init
 import captures
 import find
 import split
+import match