Simplejson

* Decoding is significantly faster (for our internal benchmarks)
* Pretty-printing tool changed from simplejson to simplejson.tool for better
Python 2.6 comaptibility
* Misc. bug fixes

* Rewrote test suite with unittest and doctest (no more nosetest dependency)
* Better PEP 7 and PEP 8 source compliance
* Removed simplejson.jsonfilter demo module
* simplejson.jsonfilter is no longer included

* Optional C extension for accelerating the decoding of JSON strings
* Command line interface for pretty-printing JSON (via python -msimplejson)
* Decoding of integers and floats is now extensible (e.g. to use Decimal) via
parse_int, parse_float options.
* Subversion and issue tracker moved to google code:
http://code.google.com/p/simplejson/
* "/" is no longer escaped, so if you're embedding JSON directly in HTML
you'll want to use .replace("/", "\\/") to prevent a close-tag attack.

* Improves encoding performance with an optional C extension to speed up
str/unicode encoding (by 10-150x or so), which yields an overall speed
boost of 2x+ (JSON is string-heavy).
* Support for encoding unicode code points outside the BMP to UTF-16
surrogate code pairs (specified by the Strings section of RFC 4627).

* Improved str support for encoding. Previous versions of simplejson
integrated strings directly into the output stream, this version ensures
they're of a particular encoding (default is UTF-8) so that the output
stream is valid.

* Better Python 2.5 compatibility
* Better Windows compatibility
* indent encoding parameter for pretty printing
* separators encoding parameter for generating optimally compact JSON