added a mustnewuuid function, useful in testing
use golang.org/x/crypto
Merge pull request #102 from rogpeppe/007-use-new-crypto-path

use golang.org/x/crypto
Merge pull request #100 from mattyw/must-new-uuid

added a mustnewuuid function, useful in testing
Add a set-of-int implementation.
Add ParseBasicAuthHeader function

ParseBasicAuthHeader parses basic auth credentials from http headers.
Merge pull request #104 from mhilton/parse-basic-auth

Add ParseBasicAuthHeader function
Merge pull request #103 from ericsnowcurrently/set-ints

Add a set-of-int implementation.