Added compute_regional_pcs() function to compute principal components for given gene regions.
Included gene region annotations dataset gene_annots.
Improved performance of compute_regional_pcs() by using a more efficient algorithm.
Updated vignette with more in-depth explanations and examples.
Fixed bug in compute_regional_pcs() that produced incorrect results for certain edge cases.
Corrected typos in man pages.
old_function_name() in favor of new_function_name().Added a detailed vignette for working with compute_regional_pcs().
Improved man pages with runnable examples for all exported functions.