cycleTrendR 0.2.0

• Major improvements to documentation, imports, and CRAN compliance.
• Added full roxygen2 documentation for all parameters and return values.
• Improved NAMESPACE management with explicit @importFrom directives.
• Enhanced vignette stability and reduced computational load in examples.
• Achieved full CRAN compliance: 0 errors, 0 warnings, 0 notes.

cycleTrendR 0.1.0

• Initial release of cycleTrendR.
• Added the main function adaptive_cycle_trend_analysis() supporting:
  • LOESS, GAM, and GAMM trend estimation
  • Automatic Fourier harmonic selection (AICc/BIC)
  • Lomb–Scargle periodogram for irregular sampling
  • Bootstrap confidence intervals (IID and MBB)
  • Change-point detection
  • Rolling-origin forecasting
• Added publication-quality ggplot2 visualizations:
  • Trend + CI
  • Periodogram
  • Residual ACF
  • Diagnostics and summary tables
• Added a comprehensive vignette: cycleTrendR-overview.
• Added README with installation instructions and examples.