'escape_chars' was renamed 'print_escapes' to avoid ambiguity. The old name will work until v0.32, but will trigger a warning so you can update your code. Sorry for the inconvenience, the previous name was hard to figure out because 'escape' could be interpreted as a noun or as an adjective (perigrin++ for suggesting the new name).
NEW FEATURES:
in hashes, surround key names with quotes if they contain spaces (feature request by Maxim Vuets)
escape_chars also works for hash keys now.
new 'quote_keys' property to add quotes in hash keys. Defaults to 'auto' which means it will quote keys containing spaces (and empty keys)
BUG FIXES:
fixed temporary file handling during tests. Thanks Andy Bach for reporting and providing a patch.
OTHER:
added documentation for the new 'rc_file' feature introduced in the previous version.