message: [documentation] mention reduced dev activity
diff: @@ -4,6 +4,15 @@ Hyperledger Iroha documentation
  .. image:: ../image_assets/iroha_logo.png
  +.. warning::
  + Please note that Hyperledger Iroha v1 is **no longer under active development**; therefore, support for Iroha v1 is limited. The core development team is focused on `Hyperledger Iroha v2 <https://github.com/hyperledger/iroha/tree/iroha2-dev#hyperledger-iroha>`_, a complete rewrite of Iroha in Rust.
  +
  + For new projects, **we recommend using Iroha v2 instead of Iroha v1**. If you are using Iroha v1, we encourage you to plan an upgrade and switch to using Iroha v2.
  +
  + The long-term supported version of Iroha v2 (`iroha2-lts`) is your best choice if you want to use Iroha in production and receive tech support from our side. Unfortunately, we cannot offer the same support for Iroha v1, so please consider using Iroha v2.
  +
  + **Note that Iroha v1 and Iroha v2 are incompatible**. You can read about their differences in the `Iroha 2 documentation <https://hyperledger.github.io/iroha-2-docs/guide/iroha-2.html>`_.
  +
  .. warning::
  For secure deployment on platforms other than new Linux versions, please read `this note <deploy/index.html#security-notice>`_ first before deploying Iroha in production.
  @@ -15,11 +24,6 @@ This documentation will guide you through the installation, deployment, and laun
  As Hyperledger Iroha is an open-source project, we will also cover contribution part and explain you a working process.
  -.. note::
  - Please note that there exists a complete rewrite of Hyperledger Iroha in Rust, `Iroha 2 <https://github.com/hyperledger/iroha/tree/iroha2-dev#hyperledger-iroha>`_. Both projects are developed concurrently in the same repository. However, they are not compatible. You can read about their differences in `Iroha 2 documentation <https://hyperledger.github.io/iroha-2-docs/guide/iroha-2.html>`_.
  -
  - For all new projects, we recommend using Iroha 2 instead of Iroha 1.
  -
  .. toctree::
  :maxdepth: 2
  :numbered:
  