Prepares 0.6.0 changelog and documentation.

Changelog.md

@@ -1,3 +1,17 @@
+### 0.6.0 (unreleased)
+
+Breaking changes:
+
+
+Language Features:
+
+
+Compiler Features:
+
+
+Bugfixes:
+
+
 ### 0.5.12 (unreleased)
 
 Language Features:

docs/060-breaking-changes.rst

@@ -0,0 +1,41 @@
+********************************
+Solidity v0.6.0 Breaking Changes
+********************************
+
+This section highlights the main breaking changes introduced in Solidity
+version 0.6.0, along with the reasoning behind the changes and how to update
+affected code.
+For the full list check
+`the release changelog <https://github.com/ethereum/solidity/releases/tag/v0.6.0>`_.
+
+
+Semantic Only Changes
+=====================
+
+This section lists the changes that are semantic-only, thus potentially
+hiding new and different behavior in existing code.
+
+
+Semantic and Syntactic Changes
+==============================
+
+This section highlights changes that affect syntax and semantics.
+
+
+How to update your code
+=======================
+
+This section gives detailed instructions on how to update prior code for every breaking change.
+
+
+Deprecated Elements
+===================
+
+This section lists changes that deprecate prior features or syntax.
+
+
+.. _interoperability_060:
+
+Interoperability With Older Contracts
+=====================================
+

docs/solidity-in-depth.rst

@@ -19,3 +19,4 @@ If something is missing here, please contact us on
    assembly.rst
    miscellaneous.rst
    050-breaking-changes.rst
+   060-breaking-changes.rst