Upate CHANGELOG

Author: prckent

CHANGELOG.md

@@ -2,18 +2,20 @@
 
 Notable changes to QMCPACK are documented in this file.
 
-## [3.9.2] - 2020-05-01
+## [3.9.2] - 2020-04-28
 
 ### Notes
 
-This is an important bugfix release. As described in
-[\#2330](https://github.com/QMCPACK/qmcpack/issues/2330), since v3.8.0
-the default build of QMCPACK would not correctly use different time
-steps in different DMC blocks, biasing the results. Thanks to Chandler
-Bennett for identifying this.
-
-* Additional changes will be described here.
+This is an important bug fix release. As described in [\#2330](https://github.com/QMCPACK/qmcpack/issues/2330), since v3.8.0 the
+timestep was not correctly changed between different DMC blocks if the time step was changed in the input, biasing the results.
+Runs using a single time step were not affected. Thanks to Chandler Bennett for identifying the problem.
 
+* Bug fix: timestep was not correctly changed between DMC blocks if it was changed in the input [\#2330](https://github.com/QMCPACK/qmcpack/issues/2330)
+* qmcfinitesize tool added. [\#2329](https://github.com/QMCPACK/qmcpack/pull/2329) 
+* QMCPACK spack package now supports AFQMC. [\#2237](https://github.com/QMCPACK/qmcpack/issues/2237)
+* Improvements to deterministic tests: these are now fully reliable other than for some CUDA builds and some mixed precision CPU configurations.
+* Many improvements to cmake configuration for faster builds, e.g. [\#2389](https://github.com/QMCPACK/qmcpack/pull/2389)
+* Ongoing source cleanup and fewer compile-time warnings, e.g. [\#2375](https://github.com/QMCPACK/qmcpack/pull/2375)
 
 ## [3.9.1] - 2020-02-11