Ongoing work on documents

docs/FUTURE.md

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+## Further Features
+
+The store supports all the required Riak backend capabilities.  A number of further features are either partially included, in progress or under consideration:
+
+- Support for HEAD operations, and changes to GET/PUT Riak paths to use HEAD requests where GET requests would be unnecessary.
+
+- Support for "Tags" in keys to allow for different treatment of different key types (i.e. changes in merge actions, metadata retention, caching for lookups).
+
+- A fast "list bucket" capability, borrowing from the HanoiDB implementation, to allow for safe bucket listing in production.
+
+- A bucket size query, which requires traversal only of the Ledger and counts the keys and sums he total on-disk size of the objects within the bucket.
+
+- Support for a specific Riak tombstone tag where reaping of tombstones can be deferred (by many days) i.e. so that a 'keep' deletion strategy can be followed that will eventually garbage collect.
+
+
+## Outstanding work
+
+There is some work required before LevelEd could be considered production ready:
+
+- A strategy for supervision an restart of processes, in particular for clerks.
+
+- Further functional testing within the context of Riak.
+
+- Introduction of property-based testing.
+
+- Riak modifications to support the optimised Key/Clock scanning for hashtree rebuilds.
+
+- Improved handling of corrupted files.
+
+- A way of identifying the partition in each log to ease the difficulty of tracing activity when multiple stores are run in parallel.