mtblr: Tools to work with 'mtbl' files

#' Tools to work with  mtbl files
#'
#' mtbl is a C library implementation of the Sorted String Table (SSTable) data
#' structure, based on the SSTable implementation in the open source Google
#' LevelDB library. An SSTable is a file containing an immutable mapping of keys
#' to values. Keys are stored in sorted order, with an index at the end of the
#' file allowing keys to be located quickly.
#'
#' mtbl is not a database library. It does not provide an updateable key-value
#' data store, but rather exposes primitives for creating, searching and merging
#' SSTable files. Unlike databases which use the SSTable data structure
#' internally as part of their data store, management of SSTable files --
#' creation, merging, deletion, combining of search results from multiple
#' SSTables -- is left to the discretion of the mtbl library user.
#'
#' @name mtblr
#' @docType package
#' @author Bob Rudis (@@hrbrmstr)
#' @import purrr
#' @useDynLib mtblr
#' @import RcppProgress
#' @importFrom Rcpp sourceCpp
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