New in BGB 1.5.7 (2018-09-14) 

• Greatly improved accuracy, including pinball deluxe/fantasies, japanese crystal, koro dice, and many test roms
• speedrun mode
• recovery save state
• mappable button to start/stop recording audio/video
• setting to not break on invalid opcode, instead hang as in reality
• Made available a 64 bits version
• MBC1 multicart (MBC1M) support
• Improvements to debugger, including undo rom edits, ctrl+tab changes active control.
• Fixed many bugs