Version 0.5.2

• Fixed Rcpp namespace import so Rcpp symbols are properly loaded at runtime
• Updated testthat comparisons against stats::stl() to use explicit matched settings and platform-robust tolerances
• Added periodic-mode regression test coverage
• Corrected centering in plot_seasonal() so cycle-subseries are centered by the seasonal component mean
• Enabled explicit native routine registration (useDynLib with .registration = TRUE)
• Removed stale LazyData field from DESCRIPTION

Version 0.5

• Updates to be CRAN-ready (0.5.1)
• Major overhaul of code to match more modern R package development standards (0.5.0)
• Update old C interface to Rcpp (0.5.0)