Update version to 0.2.0 and add cran-comments.md for CRAN submission

Co-authored-by: osorensen <21175639+osorensen@users.noreply.github.com>

Author: Copilot

.Rbuildignore

@@ -5,3 +5,4 @@
 ^dev$
 ^\.github$
 ^\.git$
+^cran-comments\.md$

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: BayesMallowsSMC2
 Type: Package
 Title: Nested Sequential Monte Carlo for the Bayesian Mallows Model
-Version: 0.1.1
+Version: 0.2.0
 Authors@R: c(person("Oystein", "Sorensen",
                     email = "oystein.sorensen.1985@gmail.com",
                     role = c("aut", "cre"),

cran-comments.md

@@ -0,0 +1,17 @@
+## R CMD check results
+
+0 errors | 0 warnings | 0 notes
+
+## Test environments
+
+* local: R 4.3.3 on Ubuntu 24.04
+* GitHub Actions: R 4.1.0, 4.2.0, 4.3.0, 4.4.0 on Ubuntu, macOS, and Windows
+* win-builder: development version
+
+## Submission notes
+
+This is the first CRAN submission of this package.
+
+The package provides nested sequential Monte Carlo algorithms for performing
+sequential inference in the Bayesian Mallows model. The implementation is based
+on the methodology described in Sørensen (2025) <doi:10.1214/25-BA1564>.