compIndexBuilder 2.0.0

Major update

• Added workbook-wide multi-sheet Excel support.
• Added an active-sheet selector that lists all sheets in an uploaded workbook.
• Added controls to refresh the workbook sheet list and reload the active sheet.
• Added per-sheet CSV downloads and ZIP export of all workbook sheets.
• Unified CSV and Excel data-loading logic and removed duplicated server paths.
• Improved missing-data handling so missing indicators are not silently treated as zero.
• Added median, interpolation, and missForest-based imputation options.
• Added min-max and z-score normalisation and mixed indicator directions.
• Improved entity-level rankings for panel data and weight-impact comparisons.
• Improved single- and multi-entity time-series forecasting.
• Corrected time-period filtering in entity comparisons.
• Expanded pillar/sub-index construction with equal, custom, correlation-based, and PCA-based weighting.
• Added diagnostic outputs for Cronbach’s alpha, coefficient of variation, PCA, sensitivity analysis, correlation heatmaps, and Sankey diagrams.
• Added processed-data export.