Update release notes for v1.3.0

Author: tsmbland

docs/release-notes/index.rst

@@ -6,6 +6,7 @@ This is the list of changes to MUSE between each release.
 .. toctree::
    :maxdepth: 1
 
+   v1.3.1
    v1.3.0
    v1.2.3
    v1.2.2
@@ -15,5 +16,3 @@ This is the list of changes to MUSE between each release.
 .. toctree::
    :caption: Upcoming releases:
    :maxdepth: 1
-
-   v1.3.1

docs/release-notes/v1.3.0.md

@@ -49,4 +49,9 @@ Please read carefully if upgrading from an earlier version, as some of the chang
 
 ### Legacy sectors ({github}`510`)
 
-- Sectors with `type = "legacy"` are no longer compatible
+- Sectors with `type = "legacy"` are no longer supported
+
+### Agent forecasting beyond the time interval
+
+- Models will no longer work if the agent `forecast` parameter is set beyond the length of the time interval. For example, if the time interval is 5 years (2020, 2025, 2030 etc.), this parameter must be set to 5 years.
+- Note: the parameter can still be configured in the input files (it will be removed in a future version), but models will not work if the value is different from the time interval.