Log Message:
sameboy: update to 0.15

                                 SameBoy v0.15

New/Improved Features

     * Improved UI for the VRAM Viewer's palette and object views
     * The bundled register names symbol file now correctly names several
       undocumented registers
     * Improved performance by better utilizing Link-Time Optimizations
     * The Memory Viewer, as well as the debugger examine command, no longer
       trigger side effects when reading from memory
     * Introducing PPU "fast paths", improving performance by up to \ 
34% with
       not accuracy losses
     * Removed the use of slow floating point arithmetics in the APU code to
       improve performance
     * Introducing lazy APU output generation, improving performance by up to
       17%
     * Link-Time Optimizations are now enabled for Windows build,
       significantly improving performance on Windows
     * A new dma debugger command
     * New icon, minor visual refresh across both the Cocoa and SDL frontends
     * The debugger apu commands now display a single channel
     * Audio recording is now available in both the Cocoa and SDL frontends
     * The SDL frontend now uses XAudio2 on Windows, when available
     * The more common rX hardware symbol naming scheme now replaces the IO_X
       scheme; the latter remains supported
     * General code optimizations for overall performance improvements

Accuracy Improvements/Fixes

     * The Game Boy Pocket/Light is now available for emulation
     * Every CGB revision is now available for emulation, adding CGB
       revisions 0, A, B and D
          * An option to select the CGB revision is now available in the SDL
            port
     * Added MBC7 support
          * The mouse, as well as a joystick, can be used for motion controls
     * Accurate timing of clearing bits in the IF register
     * Improved accuracy of LY change timings
     * Improved accuracy of the LY=LYC condition in revisions prior to CGB-D
     * Improved emulation of a glitch that makes channel 3 use the CPU's
       address bus as an index to the wave sample buffer
     * Fixed an incorrectly emulated theorized glitch where writing to VRAM
       in certain timings would corrupt data
     * Improved emulation of the TILE_SEL glitch
     * Major improvements to DMA, HDMA, and GDMA, including timings, revision
       differences, interaction with halt/stop, and all sorts of bus
       conflicts
          * This allows pixel-perfect emulation of certain demos, such as It
            Came from Planet Zilog
     * Improved IR modelling, fixes Gen 2 Pokémon Mystery Gift
     * Added MMM01 support, including Mani carts
     * Improved emulation of channel 1/2 "zombie stepping"
     * Improved serial accuracy
     * Correct emulation of how SCX prolongs mode 3
          * Including emulation of "SCX banging", which can disrupt the PPU
            state machine and, on a real device, damage the LCD
     * Improved emulation of object timings where X=0
     * Fixed a regression where MBC5's initial ROM bank was not 1
     * Improved emulation of the Game Boy Camera MBC
     * Improved HuC-1 emulation, fixes a Robopon Japanese Prototype ROM

Bug Fixes

     * Fixed a bug where certain writes, when emulating CGB-C, would corrupt
       the emulator state
     * Fixed a bug where the SDL fronted did not correctly load the palette
       setting
     * Fixed a bug where the debugger undo command was available while not
       stopped
     * Fixed GDMA being used incorrectly in SameBoot
     * Fixed a bug where the obscured object indicator did not function
       correctly in the VRAM Viewer's object view
     * Fixed the Preserve Waveforms setting, now it behaves as intended
     * Fixed SDL crashes on certain Linux systems
     * Fixed UI issues on OS X Mavericks
     * Fixed achievement supports in the Libretro frontend
     * Fixed the 16x16 cartridge icon in both Cocoa and FreeDesktop
     * Fixes audio glitches during the SGB jingle
     * Visual fixes for the GBS player on macOS Big Sur and newer

Misc Internal Changes

     * Improvements to the input hints API
     * Added safe memory read API
     * New memory write callback API
     * New API to determine DMG-mode CGB
     * Improved APIs to handle input
     * New execution callback API
     * New LCD line callback API
     * An API for adjusting the RTC speed, for TAS verifications
     * An API for detecting lag frames
     * The direct access API now supports accessing the CPU registers
     * An API for allowing illegal directional inputs
     * General preparation for future support of different AGB revisions