Put microdf in maintenance and withdraw wider pandas coverage from the roadmap

ROADMAP.md

@@ -2,17 +2,30 @@
 
 `microdf` provides weighted data structures for survey microdata: weighted
 quantiles and moments, inequality measures including the Gini coefficient and
-top and bottom shares, Foster-Greer-Thorbecke poverty measures, and variance
-estimation from replicate weights.
+top and bottom shares, poverty measures, and variance estimation from
+replicate weights.
+
+`microdf` is in maintenance. policyengine.py is taking the weighted layer into
+an internal module (see its
+[weighted-module design note](https://github.com/PolicyEngine/policyengine.py/pull/529));
+`microdf` stays maintained for policyengine-core, the country packages and the
+analysis repositories that depend on it, and new estimators land in
+policyengine.py.
 
 Planned work:
 
-* Variance from stratum and cluster identifiers, for designs where replicate
-  weights are not published
-* Presets for common datasets, such as suggesting the appropriate weight
-  variable for the SCF and the CPS
-* Wider coverage of pandas methods that change shape, so fewer operations need
-  an explicit override
+* Fail closed: any operation that cannot carry weights raises instead of
+  returning an unweighted result or a Micro object whose weights were reset
+  ([#333](https://github.com/PolicyEngine/microdf/issues/333),
+  [#264](https://github.com/PolicyEngine/microdf/issues/264))
+* Exact definitions and tests for the poverty measures
+  ([#334](https://github.com/PolicyEngine/microdf/issues/334))
+* Documentation that matches the code
+  ([#335](https://github.com/PolicyEngine/microdf/issues/335))
+
+Not planned: wider coverage of pandas methods that change shape, which the
+design note above explains; variance from stratum and cluster identifiers, for
+which `svy` and R's `survey` exist; and dataset presets.
 
 See the [issues page](https://github.com/PolicyEngine/microdf/issues) to view
 and suggest other items.

changelog.d/roadmap-maintenance.changed.md

@@ -0,0 +1 @@
+Rewrite the roadmap: microdf is in maintenance while policyengine.py takes the weighted layer in-house, and fail-closed behaviour (#333) replaces wider pandas-method coverage as planned work.