reinit the tree, so we can have metadata

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diff --git a/licenses/cns b/licenses/cns
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+             LICENSE FOR ACADEMIC (NON-PROFIT) INSTITUTIONS
+                              TO USE CNS
+
+                         TERMS OF AGREEMENT
+
+BY DOWNLOADING OR USING THE CRYSTALLOGRAPHY & NMR SYSTEM (CNS)
+GENERAL-RELEASE SOFTWARE YOU AGREE TO THE FOLLOWING TERMS:
+
+- YALE UNIVERSITY RETAINS OWNERSHIP OF ALL MATERIALS (INCLUDING
+  SOFTWARE AND DOCUMENTATION). REPORTS OF MODIFICATIONS OR DERIVATIVE
+  WORKS ARE TO BE MADE TO YALE UNIVERSITY, AND ARE TO BE MADE AVAILABLE
+  ON REQUEST.
+
+- YOU SHALL NOT USE THE SOFTWARE FOR ANY PURPOSE (RESEARCH OR
+  OTHERWISE) THAT IS SUPPORTED BY A "FOR PROFIT" ORGANIZATION WITHOUT
+  PRIOR WRITTEN AUTHORIZATION.
+
+- YOU SHALL NOT DISCLOSE IN ANY FORM EITHER THE DELIVERED SOFTWARE OR
+  DOCUMENTATION OR ANY MODIFICATIONS OR DERIVATIVE WORKS BASED ON THE
+  SOFTWARE OR DOCUMENTATION TO THIRD PARTIES WITHOUT PRIOR WRITTEN
+  AUTHORIZATION.
+
+- IF YOU RECEIVE A REQUEST TO FURNISH ALL OR ANY PORTION OF THE
+  SOFTWARE TO ANY THIRD PARTY, YOU WILL NOT FULFILL SUCH A REQUEST AND
+  WILL REFER IT IN WRITING TO YALE UNIVERSITY.
+
+- YOU AGREE THAT THE SOFTWARE IS FURNISHED ON AN "AS IS" BASIS AND
+  THAT YALE UNIVERSITY IN NO WAY WARRANTS THE SOFTWARE OR ANY OF ITS
+  RESULTS AND IS IN NO WAY LIABLE FOR ANY USE YOU MAKE OF THE SOFTWARE.
+  EXCEPT AS OTHERWISE PROVIDED IN THIS SECTION, YALE UNIVERSITY
+  DISCLAIMS ALL WARRANTIES, REPRESENTATIONS, AND STATEMENTS, EXPRESS
+  OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, ANY
+  IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
+  PURPOSE. IN NO EVENT SHALL YALE UNIVERSITY BE LIABLE FOR ANY ACTUAL,
+  DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES,
+  HOWEVER CAUSED, INCLUDING, WITHOUT LIMITATION, ANY DAMAGES ARISING OUT
+  OF THE USE OR OPERATION OF THE SOFTWARE, LOSS OF USE OF THE SOFTWARE,
+  OR DAMAGE OF ANY SORT TO THE USER.
+
+- YOU AGREE THAT ANY REPORTS OR PUBLICATION OF RESULTS OBTAINED WITH
+  THE SOFTWARE WILL ACKNOWLEDGE ITS USE BY CITATION OF THE FOLLOWING
+  ARTICLE:
+
+    "CRYSTALLOGRAPHY AND NMR SYSTEM (CNS): A NEW SOFTWARE SYSTEM
+    FOR MACROMOLECULAR STRUCTURE DETERMINATION". BRUNGER A.T., ADAMS P.D.,
+    CLORE G.M., DELANO W.L., GROS P., GROSSE-KUNSTLEVE R.W., JIANG J.-S.,
+    KUSZEWSKI J., NILGES N., PANNU N.S., READ R.J., RICE L.M., SIMONSON T.,
+    AND WARREN G.L. ACTA CRYST. D54, 905-921 (1998).