v0.7.27

Changed

• Updated melonDS to commit d55a384.

Fixed

• Fixed homebrew ROMs being rejected due to an invalid logo checksum.
  (Only retail ROMs need embedded logo data.)
• Fixed an issue where the "Screen Filtering" option wouldn't always be honored.
• Fixed the core crashing when the OpenGL context is lost
  while the OpenGL renderer is active.
• Fixed an issue where SD card images would be created with the wrong size.
• Fixed a crash that occurred in the in-core error screen.
• Fixed system files not being found inside a subdirectory named "melonDS DS".