Bit scaling#187
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demonstrate blit_buffer_scaled method usage
1) blit_bitmap draws a 1 bit per pixel byte array which avoids creating the intermediate 565 color array 2) blit_bitmap_mosaic draws from a 1, 2, 4 or 8 bit bitmap byte array and using a lookup 565 color array which can scale the bitmap
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Greatly reduce memory and time requirements when drawing bitmap or scaled images.