Backfill the news items for v1.1.0

news/backfill_new.rst

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+**Added:**
+
+* KeyedChain GufeTokenizable representation was added, allowing
+  GUFE objects to be deduplicated when serializing GufeTokenizables
+  (PR #286).
+* Added `to_json` and `from_json` convenience methods to GufeTokenizables
+  to more easily convert to a JSON keyed chain representation (PR #368).
+
+**Changed:**
+
+* Minimum Python version has been raised to v3.10 (PR #340)
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* Fixed an issue where partial charges were not being read from rdkit
+  Molecules where atom level properties were not set. This occured
+  mainly when reading from an SDF file with partial charge tags (PR #312).
+* Fixed an issue where ProtocolDAG DAG order & keys were unstable /
+  non-deterministic between processes under some circumstances (PR #315).
+
+**Security:**
+
+* <news item>