highlight major changes

CHANGES.md

@@ -1,3 +1,9 @@
+# 21.06
+
+ * The ability to use a system BLAS library was removed (#675)
+
+ * An equation of state for hypervelocity impacts was added (#645)
+
 # 21.05
 
  * For aprox19 + NSE, we now "bail out" of the integration
@@ -350,16 +356,16 @@
  * a new subCh network for He burning was added.
 
  * implemented the new c12(a,g)o16 nuclear reaction rate and its
- corresponding inverse from the work of Deboer et al. 2017 
- (https://journals.aps.org/rmp/abstract/10.1103/RevModPhys.89.035007). 
- To use the new rate, user must set `use_c12ag_deboer17` to `true`. 
+ corresponding inverse from the work of Deboer et al. 2017
+ (https://journals.aps.org/rmp/abstract/10.1103/RevModPhys.89.035007).
+ To use the new rate, user must set `use_c12ag_deboer17` to `true`.
  This rate is only useable in the `aprox13`, `aprox19`, `aprox21`,
  and `iso7` reaction rate networks. Closes issue #44.
 
  * a routine util/cj_detonation was added to compute the
  Chapman-Jouguet detonation velocity for any of the networks
 
- * the burn retry strategy now sticks with the current integrator and 
+ * the burn retry strategy now sticks with the current integrator and
  uses looser tolerances before switching to a different integrator.
 
 # 18.04
@@ -375,7 +381,7 @@
 
  * we now disable some composition derivatives in the EOS
  by default, for performance and memory reasons. They can
- be reenabled by defining the preprocessor variable 
+ be reenabled by defining the preprocessor variable
  EXTRA_THERMO (PR #59)
 
 # 17.10