Add mul and echo utilities

echo.nim

@@ -0,0 +1,8 @@
+import cligen, sequtils
+
+proc main(strings:seq[string], newline=true) =
+    if newline: writeLine(stdout, strings.foldl(a & b))
+    else: write(stdout, strings.foldl(a & b))
+    flushFile(stdout)
+
+dispatch(main)

mul.nim

@@ -0,0 +1,6 @@
+import cligen, sequtils
+
+proc main(integers:seq[int]) =
+    echo integers.foldl(a * b)
+
+dispatch(main)

nimbase.nimble

@@ -6,4 +6,4 @@ license       = "Unlicense"
 
 requires      "nim >= 0.19.0"
 requires      "cligen >= 0.9.19"
-bin           = @["add", "false", "seq", "sleep", "true"]
+bin           = @["add", "echo", "false", "mul", "seq", "sleep", "true"]