Increase encoding pre-scan length to 1024, per spec from 2011(!)
Increase encoding pre-scan length to 1024, per spec from 2011(!)

51babfe760a1dbe28c4521b2070e692ac872550a was the spec change.

html5lib/html5lib-python,mgilson/html5lib-python,html5lib/html5lib-python,html5lib/html5lib-python,mgilson/html5lib-python,mgilson/html5lib-python