Conversion between attitude representations: DCM, Euler angles, Quaternions, and Euler vectors.
    Plus conversion between 2 Euler angle set types (xyx, yzy, zxz, xzx, yxy, zyz, xyz, yzx, zxy, xzy, yxz, zyx).
    Fully vectorized code, with warnings/errors for Euler angles (singularity, out of range, invalid angle order), 
    DCM (orthogonality, not proper, exceeded tolerance to unity determinant) and Euler vectors(not unity).
    Also quaternion and other useful functions.
    Based on SpinCalc by John Fuller and SpinConv by Paolo de Leva.

Implementation of various spirometry equations
    in R, currently the GLI-2012 (Global Lung Initiative;
    Quanjer et al. 2012 <doi:10.1183/09031936.00080312>),
    the race-neutral GLI global 2022 (Global Lung Initiative;
    Bowerman et al. 2023 <doi:10.1164/rccm.202205-0963OC>), the
    NHANES3 (National Health and Nutrition Examination Survey;
    Hankinson et al. 1999 <doi:10.1164/ajrccm.159.1.9712108>)
    and the JRS 2014 (Japanese Respiratory Society; Kubota
    et al. 2014 <doi:10.1016/j.resinv.2014.03.003>) equations.
    Also the GLI-2017 diffusing capacity equations 
    <doi:10.1183/13993003.00010-2017> are implemented.
    Contains user-friendly functions to calculate predicted 
    and LLN (Lower Limit of Normal) values for different 
    spirometric parameters such as FEV1 (Forced Expiratory 
    Volume in 1 second), FVC (Forced Vital Capacity), etc, 
    and to convert absolute spirometry measurements 
    to percent (%) predicted and z-scores.

Enables binary package installations on Linux distributions.
    Provides access to 'RStudio' public repositories at
    <https://packagemanager.posit.co>, and transparent management of
    system requirements without administrative privileges. Currently supported
    distributions are 'CentOS' / 'RHEL', and several 'RHEL' derivatives
    ('Rocky Linux', 'AlmaLinux', 'Oracle Linux', and 'Amazon Linux'),
    'openSUSE' / 'SLES', 'Debian', and 'Ubuntu' LTS.

Provides an interface to the Spotify API <https://developer.spotify.com/documentation/web-api/>.