Refactor BridgeDB's use of `sha` module to use `hashlib` instead.
Everytime the sha
module is imported, the following DeprecationWarning
occurs:
DeprecationWarning: the sha module is deprecated; use the hashlib module instead
We should probably heed its advice. Unless something strange is being done somewhere with the sha
module, we should pretty much be able to do 's/sha\.sha\(/hashlib\.sha\(/'
.