Very easily record statistics for your program, in a concurrency-safe way

See enclosed LICENSE.txt file.

The following will print sums of foo = 5 and bar = 10 to stderr:

stats := easystat.NewWriter(os.Stderr, 500*time.Millisecond)
stats.Add("foo", 1)
stats.Add("bar", 2)
stats.Add("foo", 4)
stats.Add("bar", 8)
stats.Stop()