dictates.
+ the parser now removes the escapechar prefix from escaped characters.
+ when quoting=QUOTE_NONNUMERIC, the writer now tests for numeric
- types, rather than any object than can be represented as a numeric.
+ types, rather than any object that can be represented as a numeric.
+ when quoting=QUOTE_NONNUMERIC, the reader now casts unquoted fields
to floats.
+ reader now allows \r characters to be quoted (previously it only allowed