Here's whatsnew:
-- 0.3.1 -- 2007-10-26 --
gambatte_qt:
- Enable Joystick POV-Hat events.

-- 0.3.0 -- 2007-10-26 --
libgambatte:
- Fix adc/sbc and add_hl_rr hfc calc, sp_plus_n cf/hcf calc and daa thanks
to blargg.
- document HF2 better
- Update sound core according to blargg's findings.
- Improve resampling quality and performance.
- Fix overlooked "add hl,sp" flag calculation.
- fix initial endtime value
- check for resampling ratio < 1
- Add support for DMG palette customization.
gambatte_sdl:
- use std::map for parser
- Don't bother hashing.
- Add input config support.
- Add joystick support.
- Fix horrid "turbo can affect emulation" bug.
- Add sw and yuv overlay scaling.
- Use cond/mutex for thread syncing, RAII, refactor.
- add option for sample rate choice
- Add option to list valid input keys
- don't die if audio fails
gambatte_qt:
- no point in filter being non-static anymore
- use std::map for input vectors
- remove unused unusedBool
- Fix horrid "turbo can affect emulation" bug.
- remove some useless optimizations
- auto_ptr love.
- support joystick hat.
- nicer input handling.
- Add sound dialog.
- Add custom dev choice for oss, alsa engines.
- Use rgb if available for xv.
- Get rid of BAD_MATCH warnings for setting non-existent xv attributes.
- make subblitters private nested classes
- add reset action
- Add support for DMG palette customization.
- Add global buffer option for dsound engine

Get it here:
http://sourceforge.net/project/showfiles.php?group_id=203791

-Trebor