Populate changelog with more recent new features

Author: adamnsch

changelog/0.1.0.md

@@ -6,7 +6,11 @@
 
 ## New features
 
-* When connecting to AuraDS, a specific `user-agent` will be specified indicating that the `graphdatascience` client is used.
+* When connecting to AuraDS, a specific `user-agent` will be set indicating that the `graphdatascience` client is used.
+* The library now exposes a variable `__version__` which holds the version of the library as a string.
+* The methods of `NCTrainingPipeline` and `LPTrainingPipeline` for building the pipelines now return metadata from the underlying Cypher procedures called.
+* Methods creating `Graph` objects now additionally return the metadata from the underlying Cypher procedures called.
+* Methods creating `Model` objects now additionally return the metadata from the underlying Cypher procedures called.
 
 
 ## Bug fixes