Fixed bugs:

• Issue #177: Detached process should not have pipe as its current ports.
• Issue #178: (rfc pem) does not confirm RFC 1421 section 4.4
• Issue #179: Chunked input/output port without any content raises an error by set-port-position!
• Issue #180: unbound variable check on R6RS is done incorrectly.
• R7RS syntax-rules raised unbound variable warning

Improvements:

• Safe read/write library cache file
• Performance of bignum multiplication on Linux has been improved.

New features:

• SRFI-133 has been supported
• File monitoring library (sagittarius filewatch) has been added
• http-gzip-receiver procedure for handling gzip encoded HTTP response has been added to (rfc http)