This Go package contains software to generate random strings good for
 use in URIs to identify unique objects.
 .
 A standard string created by New() is 16 bytes in length and consists
 of Latin upper and lowercase letters, and numbers (from the set of 62
 allowed characters), which means that it has ~95 bits of entropy. To get
 more entropy, you can use NewLen(UUIDLen), which returns 20-byte string,
 giving ~119 bits of entropy, or any other desired length.