TurboJPEG: Add "copy none", progressive xform opts

Allow progressive entropy coding to be enabled on a
transform-by-transform basis, and implement a new transform option for
disabling the copying of markers.

Closes #153

turbojpeg.h

@@ -488,29 +488,43 @@ enum TJXOP
  * that cannot be transformed will be left in place, which will create
  * odd-looking strips on the right or bottom edge of the image.
  */
-#define TJXOPT_PERFECT  1
+#define TJXOPT_PERFECT     1
 /**
  * This option will cause #tjTransform() to discard any partial MCU blocks that
  * cannot be transformed.
  */
-#define TJXOPT_TRIM     2
+#define TJXOPT_TRIM        2
 /**
  * This option will enable lossless cropping.  See #tjTransform() for more
  * information.
  */
-#define TJXOPT_CROP     4
+#define TJXOPT_CROP        4
 /**
  * This option will discard the color data in the input image and produce
  * a grayscale output image.
  */
-#define TJXOPT_GRAY     8
+#define TJXOPT_GRAY        8
 /**
  * This option will prevent #tjTransform() from outputting a JPEG image for
  * this particular transform (this can be used in conjunction with a custom
  * filter to capture the transformed DCT coefficients without transcoding
  * them.)
  */
-#define TJXOPT_NOOUTPUT 16
+#define TJXOPT_NOOUTPUT    16
+/**
+ * This option will enable progressive entropy coding in the output image
+ * generated by this particular transform.  Progressive entropy coding will
+ * generally improve compression relative to baseline entropy coding (the
+ * default), but it will reduce compression and decompression performance
+ * considerably.
+ */
+#define TJXOPT_PROGRESSIVE 32
+/**
+ * This option will prevent #tjTransform() from copying any extra markers
+ * (including EXIF and ICC profile data) from the source image to the output
+ * image.
+ */
+#define TJXOPT_COPYNONE    64
 
 
 /**