Provides streamlined installation for packages from the 'natverse',
    a suite of R packages for computational neuroanatomy built on top of the
    'nat' 'NeuroAnatomy Toolbox' package. Installation of the complete
    'natverse' suite requires a 'GitHub' user account and personal access token
    'GITHUB_PAT'. 'natmanager' will help the end user set this up if necessary.

Color palettes for data visualization inspired by National Parks. Currently contains 15 color schemes and checks for colorblind-friendliness of palettes.

Interface to 'NatureServe' (<https://www.natureserve.org/>).
    Includes methods to get data, image metadata, search taxonomic names,
    and make maps.

Natural strata can be used in observational studies to balance
    the distributions of many covariates across any number of treatment
    groups and any number of comparisons. These strata have proportional 
    amounts of units within each stratum across the treatments, allowing 
    for simple interpretation and aggregation across strata. Within each 
    stratum, the units are chosen using randomized rounding of a linear 
    program that balances many covariates.
    To solve the linear program, the 'Gurobi' commercial optimization software 
    is recommended, but not required. The 'gurobi' R package can be installed following the instructions 
    at <https://www.gurobi.com/documentation/9.1/refman/ins_the_r_package.html>.

Implementation of the two error variance estimation methods in high-dimensional linear models of Yu, Bien (2017) <arXiv:1712.02412>.

Classify occurrence records based on confidence
    levels of species identification. In addition, implement tools to filter
    occurrences inside grid cells and to manually check for possibles errors with 
	an interactive shiny application.

Provides functions related to human natural ordering.
    It handles adjacent digits in a character sequence as a number so that
    natural sort function arranges a character vector by their numbers, not digit
    characters. It is typically seen when operating systems lists file names. For
    example, a sequence a-1.png, a-2.png, a-10.png looks naturally ordered because 1
    < 2 < 10 and natural sort algorithm arranges so whereas general sort algorithms
    arrange it into a-1.png, a-10.png, a-2.png owing to their third and fourth
    characters.