Fixed bugs:

• SRFI-112 rx required underlying (test sre).
• Compiler computed pre-frame size wrongly. #46
• syntax-rules could not refer template variable properly. #7
• R6RS placeholder _ was compared without considering binding. #47
• Reading huge cache file took more time than compiling library. #35
• CMakeLists.txt contained EQUAL instead of using STREQUAL.
• Macro expansion did not slice ellipsis properly. #48
• With certain value bignum subtraction was done incorrectly. #49
• Custom hash function did not accept bignum as hash value. #50
• Identifier renamed by R7RS syntax-rules was not resolved properly. #51
• let-syntax made invalid scope. #52
• R7RS style escaped symbol was not read/write invariance. #53
• #!r6rs did not change writer mode in REPL. #54

Improvements:

• sagittarius supports handling pipe input.
• (rfc http) do not convert socket binary port to transcoded port.
• (rfc ssh) supports counter mode.
• include and include-ci include files more like C's include.

New features:

• (packrat) supports *, + and ? as quantifier.
• Binary I/O utility library (binary io) has been added.
• (util bytevector) supports SRFI-13 like APIs.
• Binary data parsing library (binary parse) has been added.
• Gauche like char-set reading reader macro has been added. #!read-macro=char-set.

New documents:

• (rfc http) has been documented.