Insufficient Entropy In Randomly-Generated Alphanumeric Strings

github.com/masterminds/goutils has insufficient entropy In randomly-generated alphanumeric strings. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9 which significantly reduces the amount of entropy in short strings generated by these functions, resulting in patterns or clusters of values more likely to occur than others.