essential8 0.2.0

Major Changes

score_le8() can now work with data that have missing values (#7).
Added min_components, an argument to control how many available components are required forle8_composite_score. Valid options range from 1-8.

Added le8_n_components and le8_complete outputs for transparent reporting of the available components for LE8 composite scores.
Added consolidated, classed warnings when one or more LE8 components cannot be calculated for any observation, including a stronger warning when structural missingness makes min_components impossible to reach.

Added score_le8() for complete adult records aged 20 years or older, using the eight component definitions in the AHA 2022 Presidential Advisory.
Added raw 16-item MEPA derivation with exact case-insensitive screener-column matching, optional explicit column mappings, an auditable mepa_total, and population-percentile diet scoring.
Added moderate-equivalent activity minutes, general or Asian-Pacific BMI profiles, and explicit glucose-measure selection.
Changed score_le8() to take one scalar diet_method argument per call, defaulting to "mepa"; percentile calls require diet_value, and data using both methods must be scored in separate calls.
Renamed the composite output from le8_score to le8_composite_score.
Expanded MEPA sex input to accept trimmed, case-insensitive m/f and male/female, plus numeric or character 0/1 (0 is male and 1 is female). The default field is sex, female is recognized when sex is absent, and other field names can be supplied through mepa_columns.
Added a reproducible Get Started vignette.