Add meta EIP for hard forks

EIPS/eip-233.md

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+---
+eip: 233
+title: Formal process of hard forks
+author: Alex Beregszaszi (@axic)
+type: Meta
+status: Draft
+created: 2017-03-23
+---
+
+## Abstract
+
+To describe the formal process of preparing and activating hard forks.
+
+## Motivation
+
+Today discussions about hard forks happen at various forums and sometimes in ad-hoc ways.
+
+## Specification
+
+A Meta EIP should be created and merged as a *Draft* as soon as a new hard fork is planned. This EIP should contain:
+- the desired codename of the hard fork,
+- list of all the EIPs included in the hard fork and
+- activation block number once decided and
+- the **Requires** header should point to the previous hard fork meta EIP.
+
+The draft shall be updated with summaries of the decisions around the hard fork. It should move in to the `Accepted` state once the changes are frozen (i.e. all referenced EIPs are in the `Accepted` state) and in to the `Final` state once the hard fork has been activated.
+
+## Rationale
+
+A meta EIP for coordinating the hard fork should help in visibility and traceability of the scope of changes as well as provide a simple name and/or number for referring to the proposed fork.
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).