NEWS

LIPIDIFy 0.99.0

Added normalize_mean() and full pipeline builder supporting TIC, PQN, Quantile, VSN, Median, Mean, Log2, Log10, Sqrt, None
Added get_normalization_descriptions() for UI help text
Shiny app: Select All / Deselect All buttons on every checkbox group
Shiny app: group-coloured normalization comparison plots
Shiny app: full plot history tracked across the session for complete reports
Shiny app: samples sorted by group in Lipid Expression plots
Shiny app: descriptive, timestamped download filenames for all plots

create_pca_plot_with_ellipses(): fixed duplicate legend keys when ellipses are drawn (fill + color legends now merged into one)
create_lipid_expression_barplot(): samples now sorted by group, not by sample name
Excel export: worksheet names truncated to Excel's 31-character limit
Normalization help text modal and ellipse help modal now display correctly
perform_plsda(): replaced cat() with message() (Bioconductor requirement)
perform_enrichment_analysis(): replaced cat() with message()

Quantile normalization producing near-identical boxplots is expected and correct behaviour; inline documentation and UI now make this explicit
Median and Mean normalization can look similar on symmetric (log-normal) lipidomics data; on skewed data they differ — this is also expected