Diff of /CMakeLists.txt [314327] .. [6e0722] Maximize Restore

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--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,7 +209,7 @@
 ## Panotools
 ##
 
-FIND_PACKAGE(PANO13)
+FIND_PACKAGE(PANO13 2.9.17 REQUIRED)
 
 IF(PANO13_FOUND)
   SET(PANO_LIBRARIES ${PANO13_LIBRARIES})