cuekit and cuenorm: three subtitle formats, one cue stream

parity/golden/cuenorm/plain.ndjson

@@ -0,0 +1,3 @@
+{"start":1,"end":3,"text":"The mill stood at the northern end of the valley."}
+{"start":3,"end":5.5,"text":"Its wheel was undershot, which was wasteful."}
+{"start":5.5,"end":9.25,"text":"Nobody replaced it for two hundred years."}