Solidify 1.21

v1.22

• Fix to use the correct internal alpha channel
• Some GUI works for future

v1.21

• Fix for changed bit depth when external alpha/mask is using

v1.2

• Grayscale images support

v1.1

• External file masks/alpha support. (original alpha channel is ignored)
• External mask read only once per batch
• Drag & Drop window always on top