Update ChangeLog

Author: billsacks

ChangeLog

@@ -2,6 +2,49 @@
 This file describes what tags were created on master and why
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+================================================================================
+Originator: sacks
+Date: December 28, 2021
+Version: cismwrap_2_1_95
+One-line summary: Support one ice sheet evolving and one not evolving
+
+Purpose of changes:
+
+   Changes needed to allow a mix of evolving and non-evolving ice sheets
+   in a single run. The primary need for this was moving zero_gcm_fluxes
+   from cism_in into the config file, but I also made some other small
+   changes to support this scenario. I have also added an ERI test of
+   this scenario to make sure that hybrid, branch and restart runs all
+   work when you have a mix of evolving and non-evolving ice sheets.
+
+   Also some other minor fixes.
+
+Standalone checkout supported in this tag (Yes/No): Yes
+   (If yes, this implies that we expect to be able to build and run a
+   case from a standalone checkout using manage_externals, and for this
+   to continue to work long-term. The answer may be "No" if the set of
+   externals pointed to by manage_externals is broken, or if at least
+   one external points to a temporary branch that is may be deleted in
+   the near future.)
+
+   If No: Notes on externals used for testing:
+
+Changes answers relative to previous tag: NO
+
+Bugs fixed (include github issue number):
+
+   Resolves ESCOMP/CISM-wrapper#53 (Change handling of some ice
+   sheet-specific variables that are currently in cism_in)
+   
+   Resolves ESCOMP/CISM-warpper#54 (Do some testing with one ice sheet
+   evolving and the other not evolving)
+
+Summary of testing:
+
+   Full aux_glc test suite on cheyenne and izumi.
+
+   All tests passed and were bit-for-bit.
+
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 Originator: sacks
 Date: December 27, 2021