CHANGELOG entries

CHANGELOG.md

@@ -11,14 +11,19 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Alignment position support (#44)
 - Add Downstream tests (#70)
 - Add ssh secret to TagBot.yml (#71)
+- Project layout notes (#72)
 
 ### Changed
 - Updated CI to use GitHub actions (#47)
 - *master* set as the main development branch (#49, #50)
+- Incremented BioSymbols and BioSequences compatibility (#72)
+- Updated doctests (#72)
+- Adjusted test matrix for minimum compatibility (#72)
 
 ### Removed
 - :exclamation: Reverted the use of *BioJulia* registry,
   the package switched to [General Julia Registry](https://github.com/JuliaRegistries/General) (#48)
+- :exclamation: Support for julia versions less than v1.6 was dropped (#72)
 
 ## [2.0.0]