klct v0.2.2

• Y-axis labels with units: plot_groups() facet strips and
  plot_groups_2x2() y-axis labels now display the measure name with its
  unit (e.g., "Ct.Th (mm)", "Ct.vBMD (mg HA/cm³)"). In plot_groups(),
  the unit wraps to a second line below the measure name so that facet strips
  stay compact even with long units. An internal measure_units lookup in
  R/labels.R maps every NeoScan measure column to its unit string; unknown
  measures fall back to the raw column name.