Read Swiss Ornithology institute files in the `.glf` and re-formats them to a skytrackr compatible format.
stk_read_glf(files, verbose = TRUE)
A skytrackr compatible data frame for use in further location estimation.
if (FALSE) { # \dontrun{
df <- stk_read_glf("your_SOI_glf_file.glf")
} # }