Decode \x \u \U bytes in double quoted strings #204
Description
If decoding is not done, then emitting in single-quoted strings will be wrong, causing the event tests to fail.
Eg: https://play.yaml.io/main/parser?input=LSAiXG5ceDBhIg==
- "\n\x0a"Causes these events:
+STR
+DOC
+SEQ
=VAL '\n\\x0a
-SEQ
-DOC
-STR