Add the Consensus team bi-weekly update (2023-05-31). (#173)

blog/2023-05-31-consensus.md

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+---
+title: Consensus Team Update
+slug: 2023-05-31-consensus
+authors: dnadales
+tags: [consensus]
+hide_table_of_contents: false
+---
+
+## High level summary
+
+During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network's ledger-peer selection (see [this issue](https://github.com/input-output-hk/ouroboros-consensus/issues/101)). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.
+
+On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.
+
+## UTxO-HD
+
+- We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking `SOP` classes like `HPure` and `HAp` . In short, we implement generalised versions of important classes like `Applicative` and `Traversable`.
+
+## Support
+
+- `fs-sim-0.1.0.2` and `fs-api-0.1.0.2` were released, which makes them now compatible with GHC up to `9.6`.
+- `ouroboros-consensus-0.7.0.0` was released for `cardano-node` `8.1`, including query serialization fixes for backwards compatibility.