New Aseprite version is available with a lot of bug fixes and a couple of new minor features:

• New option for paint bucket to use all layers as reference
• Added copy & paste support of images on OS X
• Added Wacom eraser support on Windows and OS X
• Improved status bar
• Don't destroy custom brush when we use X key to switch colors
• Improve selection rectangle/shape feedback with a negative black/white color, so it's always visible
• Fixed blurry graphics when Windows DPI scaling is greater than 100%
• Fixed bug copying frames between sprites: now frame duration is preserved
• Fixed regression bug with default folder for new files
• Use correct/configured Eraser brush size when Eraser is activated with right-click or as a quicktool (bug report on Steam)
• Fixed brush size when we click on brush icon
• Fixed crash pressing º key on keyboard configuration
• Fixed crash when we press Del or Backspace keys while we are moving a cel

More information in Aseprite blog announcement.