update CHANGES

Author: zingale

CHANGES.md

@@ -1,5 +1,20 @@
 # Changelog
 
+## 26.06
+
+  * add a 5th order stiffly-accurate Rosenbrock integrator (#1994,
+    #2001, #2002, #2004, #2008)
+
+  * update CMake to allow selection of the integrator (#2005)
+
+  * add a utility to find xrb ignition condition (#1911)
+
+  * fix function signature of ``primordial_chem`` (#1986)
+
+  * reverse ``inline`` changes to EOS for HIP (#1991)
+
+  * fix some math rendering in docs (#1992)
+
 ## 26.05
 
   * fix the `vode_example` network (#1984)