todoRtxt: Parsing and Analysis of todo.txt Files

#' @title todoRtxt: An R Parser And Interaction Toolkit For todo.txt Files
#'
#' @author Paul Lemmens (paul.lemmens@gmail.com)
#'
#' @description
#' `todo.txt` files are flat (ascii) text files containing a series of tasks
#' complying to a format specified by Gina Trappani (see [todotxt.org]) that
#' enables decorating a to with priority, due date, and tags for sorting and
#' filtering.
#'
#' The `todoRtxt` R package provides a parser for such files as
#' well as functions to add, update, delete, or cross out completed tasks.
#' A Shiny app is provided that provides a (semi) GUI for these operations as
#' well as an analytics engine for completed tasks.
#'
#' @section Overview:
#' A short section on how the package can be used.
#'
#' Note that the design of the todo.txt specification revolves around a single
#' (set of) file(s) without means for synchronization across devices. Given
#' the proliferation of cloud storage, clients can use such a solution to
#' enable synchronizing on the level of a file. Typically Dropbox is used.
#'
#' @section Exported functions:
#' Loading one/more files, editing/modifying a task.
#'
#' @section Shiny app:
#' **FIXME: todo**
#'
#' @docType package
#' @name todoRtxt
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