golang function timer - taken from https://coderwall.com/p/cp5fya/measuring-execution-time-in-go
The author of that helpful article did not include a repo to pull it in as a package, which I felt would be useful, so I created this, buf full credit goes to the original author.
Copied example:
func factorial(n *big.Int) (result *big.Int) {
defer exectimer.Track(time.Now(), "factorial")
// ... do some things, maybe even return under some condition
return n
}