black: blacken scripts
test-check-format.t doesn't appear to detect Python scripts with shebangs.
But my editor which is configured to auto run black on Python files does
and it appears some files are not blackened.
This commit blackens scripts that need it.
# skip-blame reformatting
Differential Revision: https://phab.mercurial-scm.org/D7420
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}