read_flight_file: Read in txt file from telemetry flight
In jBernardADFG/telprep: Quick and automatic processing of aerial telemetry data

Read in txt file from telemetry flight

read_flight_file(
  input_file,
  remove_999 = T,
  mort_sig = T,
  try_formats = c("%m/%d/%y %H:%M:%OS", "%m/%d/%Y %H:%M:%OS")
)

`input_file`	The file path of the txt file.
`remove_999`	Use remove_999=T to remove all 999 tag IDs. Use remove_999=F otherwise.
`mort_sig`	When Tag IDs > 100 signal mortality, use mort_sig=T. Use mort_sig=F otherwise.
`try_formats`	The program uses POSIXct dates internally. If the date was programmed with an unusual format, it can be modified here.