deseats 1.1.0

• the argument correction_factor in the functions deseats, s_semiarma and select_bwidth is now set to FALSE by default.
• further arguments were added to deseats, s_semiarma and select_bwidth to allow for a fine-adjustments of the algorithm, when an ARMA model is assumed as the error process.
• the functions seasonplot and seasonplot_gg were added to allow for the creation of seasonal plots.
• the faulty link in the manual to the RcppArmadillo package was removed.
• the example in the documentation of ts_conversion was adjusted to use file.path for the path to the temporary data file.