All: Update CHANGES for 0.4.0
All: Update CHANGES for 0.4.0

jeremyherbert/mgba,fr500/mgba,iracigt/mgba,Touched/mgba,MerryMage/mgba,MerryMage/mgba,Touched/mgba,sergiobenrocha2/mgba,jeremyherbert/mgba,libretro/mgba,sergiobenrocha2/mgba,Iniquitatis/mgba,sergiobenrocha2/mgba,iracigt/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,Anty-Lemon/mgba,Touched/mgba,libretro/mgba,libretro/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,MerryMage/mgba,mgba-emu/mgba,mgba-emu/mgba,Anty-Lemon/mgba,fr500/mgba,mgba-emu/mgba,fr500/mgba,jeremyherbert/mgba,mgba-emu/mgba,Iniquitatis/mgba,sergiobenrocha2/mgba,libretro/mgba,iracigt/mgba,jeremyherbert/mgba,sergiobenrocha2/mgba,fr500/mgba,libretro/mgba,iracigt/mgba