Docs: more compatibility notes

src/sphinx/Community/ChangeSummary_0.13.0.rst

@@ -21,6 +21,8 @@ Features, fixes, changes with compatibility implications (incomplete, please hel
 - sbt no longer overrides the Scala version in dependencies.  This allows independent configurations to depend on different Scala versions and treats Scala dependencies other than scala-library as normal dependencies.  However, it can result in resolved versions other than ``scalaVersion`` for those other Scala libraries.
 - JLine is now configured differently for Cygwin.  See :doc:`/Getting-Started/Setup`.
 - Jline and Ansi codes work better on Windows now.  CI servers might have to explictly disable Ansi codes via ``-Dsbt.log.format=false``.
+- Forked tests and runs now use the project's base directory as the current working directory.
+- ``compileInputs`` is now defined in ``(Compile,compile)`` instead of just ``Compile``
 
 Features
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