prepare CRAN release

Author: dashaub

pkg/DESCRIPTION

@@ -1,7 +1,7 @@
 Package: forecastHybrid
 Title: Convenient Functions for Ensemble Time Series Forecasts
-Version: 5.1.20
-Date: 2025-07-03
+Version: 5.1.21
+Date: 2026-01-14
 Authors@R: c(
    person("David", "Shaub", email = "davidshaub@alumni.harvard.edu", role = c("aut", "cre")),
    person("Peter", "Ellis", email = "peter.ellis2013nz@gmail.com", role = c("aut"))
@@ -33,7 +33,7 @@ License: GPL-3
 URL: https://gitlab.com/dashaub/forecastHybrid, https://github.com/ellisp/forecastHybrid
 BugReports: https://github.com/ellisp/forecastHybrid/issues
 LazyData: true
-RoxygenNote: 7.3.2
+RoxygenNote: 7.3.3
 ByteCompile: true
 NeedsCompilation: no
 Encoding: UTF-8

pkg/inst/NEWS.md

@@ -1,3 +1,8 @@
+# Version 5.1.21 [2025-01-14]
+* Support the new `fc_model` objects from `forecast` package version 9
+* Safer handling of series in `cvts()`
+* Linting to use implicit returns
+
 # Version 5.1.20 [2025-07-03]
 * Main project repo is now hosted on [Gitlab](https://gitlab.com/dashaub/forecastHybrid/). The [GitHub](https://github.com/ellisp/forecastHybrid) repo may not be the most up to date.
 * Added second GPG signing key davidshaub@alumni.harvard.edu to package in addition to deprecated davidshaub@gmx.com key in `inst` directory.