Add defines for XZ and JPEG compression. (no implementation)

diff --git a/lib/zip.h b/lib/zip.h
index 61195cf..804dcea 100644
--- a/lib/zip.h
+++ b/lib/zip.h

@@ -161,6 +161,8 @@
 /* 15-17 - Reserved by PKWARE */
 #define ZIP_CM_TERSE	      18  /* compressed using IBM TERSE (new) */
 #define ZIP_CM_LZ77           19  /* IBM LZ77 z Architecture (PFS) */
+#define ZIP_CM_XZ	      95  /* XZ compressed data */
+#define ZIP_CM_JPEG	      96  /* Compressed Jpeg data */
 #define ZIP_CM_WAVPACK	      97  /* WavPack compressed data */
 #define ZIP_CM_PPMD	      98  /* PPMd version I, Rev 1 */