Update CHANGELOG entries

Author: IshaanDesai

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## latest
 
+- Modify way to provide micro structure in JSON input https://github.com/DataAnalyticsEngineering/FANS/pull/43
+- Add conda package for FANS https://github.com/DataAnalyticsEngineering/FANS/pull/39
+- Introduce system for checking compiler flags: `avx2` & `fma` https://github.com/DataAnalyticsEngineering/FANS/pull/34
+- Add `results_prefix` field in the JSON input https://github.com/DataAnalyticsEngineering/FANS/pull/36
 - Build FANS as a library to be coupled to a macro-scale simulation via preCICE and the Micro Manager https://github.com/DataAnalyticsEngineering/FANS/pull/23
 
 ## v0.3.0