Python 3 preparation: update map() calls as needed. Tool-assisted patch. Note one place using map with first argument None (not supported in Python 3) which needed to change to using itertools.zip_longest (respectively itertools.izip_longest in Python 2).

{
    "validthis": true,
    "laxcomma" : true,
    "laxbreak" : true,
    "browser"  : true,
    "eqnull"   : true,
    "debug"    : true,
    "devel"    : true,
    "boss"     : true,
    "expr"     : true,
    "asi"      : true
}